WO2023198800A1 - New compositions combining at least one inorganic solar filter, and use thereof - Google Patents
New compositions combining at least one inorganic solar filter, and use thereof Download PDFInfo
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- WO2023198800A1 WO2023198800A1 PCT/EP2023/059595 EP2023059595W WO2023198800A1 WO 2023198800 A1 WO2023198800 A1 WO 2023198800A1 EP 2023059595 W EP2023059595 W EP 2023059595W WO 2023198800 A1 WO2023198800 A1 WO 2023198800A1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/64—Proteins; Peptides; Derivatives or degradation products thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/27—Zinc; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
- A61K8/347—Phenols
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
- A61P17/18—Antioxidants, e.g. antiradicals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
- A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
Definitions
- DESCRIPTION TITLE NEW COMPOSITIONS COMBINING AT LEAST ONE INORGANIC SUNSCREEN AND THEIR USE FIELD OF THE INVENTION
- the present invention relates to new compositions combining at least one inorganic sunscreen and their use in cosmetics, as well as their pharmaceutical use, particularly in dermatology, especially as sun protection for the skin.
- STATE OF PRIOR ART Exposure to solar radiation has beneficial effects, but during overexposure it can also lead to deleterious consequences on the skin both in the short and long term, such as solar erythema known as “sunburn”. sun”, accelerated aging of tissues, photodermatoses, even carcinomas or melanomas.
- UV-A 320-400 nm
- UV-A rays can penetrate deeper into the skin, causing the release of free radicals, leading to changes in DNA. UV rays therefore have a pro-oxidant effect.
- “Sunburn” or erythema induced by solar irradiation, or actinic erythema clinically corresponds to histological characteristics marked by the presence of dyskeratotic cells or “sunburn cells”, corresponding to apoptotic keratinocytes.
- Actinic erythema is mainly linked to UV-B but also to the action of UVA.
- the consequences of UV-induced erythema are multiple, involving DNA damage, generation of reactive oxygen species (ROS), and an array of inflammatory mediators.
- ROS reactive oxygen species
- Natural photoprotection can be induced by the skin which has intrinsic defense systems allowing it to fight against the sun's aggressions. It is expressed by the production of photoprotective melanin pigments, or by a thickening of the stratum corneum with a greater number of layers of keratinocytes in the epidermis.
- photoprotection can also be induced and ensured by means such as the topical application of photoprotective cosmetic products such as sun creams.
- Such topical preparations are generally characterized by a sun protection factor "SPF" (Sun Protection Factor), indicator of the level of protection against solar erythema, adapted to particular sunlight conditions and skin phototypes.
- SPF Sun Protection Factor
- protective substances such as physical filters, chemical filters and photoprotective active agents are often combined.
- the combination of such heterogeneous active ingredients in topical formulas is not without problems: lack of stability, cost, biodegradability, formation in contact with oxygen, or its reactive species, of by-products including toxicology is often unknown.
- High-performance chemical filters have been developed, presenting increased photostability and broad absorption spectra with respect to UV-A and/or UV-B.
- phyto-cannabinoids include non-psychotropic cannabinoids such as cannabidiol (CBD), cannabigerol (CBG), cannabinol (CBN), cannabichromene (CBC), cannabivarin (CBDV), cannabicyclol (CBL ) and cannabicitran (CBT).
- CBD cannabidiol
- CBG cannabigerol
- CBN cannabinol
- CBC cannabichromene
- CBDV cannabivarin
- CBL cannabicitran
- phyto-cannabinoids we mean cannabinoids of plant origin, that is to say from plants.
- non-psychotropic phyto-cannabinoids contained in hemp such as cannabidiol and cannabigerol help relieve skin conditions such as inflammation and unexpectedly exhibit an attenuating effect on cell apoptosis induced by UV radiation.
- Other active substances such as biomimetic peptides can have a protective effect on the skin against solar radiation. Indeed, biomimetic peptides mimic the action of natural peptides, while being biocompatible.
- acetyl hexapeptide-1 an alpha-MSH agonist by stimulating melanin synthesis, helps reinforce the skin's natural photoprotection capacity by protecting it from DNA damage initiated by UV and reduces the appearance of solar erythema, soothes skin damaged by the sun and limits the signs of photoaging.
- TECHNICAL PROBLEM There is a need for topical application compositions to protect the skin against solar radiation and prevent its damage.
- topical compositions with strong sun protection with a texture allowing easy application and optimal coverage of the skin during application.
- compositions with strong sun protection which, after application, leave a feeling of hydration and softness and do not leave the sensation of a sticky film applied to the skin and do not leave unpleasant white marks on the skin.
- sun protection compositions limiting the use of chemical sun filters based on natural, biocompatible and non-toxic products, or based on environmentally friendly products.
- One of the aims of the invention is to propose a combination of active substances making it possible to protect the skin against solar radiation, and in particular to prevent the ravages of prolonged exposure to the sun such as solar erythema.
- Another aim of the present invention is to propose a combination of active substances making it possible to protect the skin against solar radiation based on natural products, including for example plant extracts, and/or based on biomimetic products, inspired by natural and biocompatible with the skin.
- Another aim of the present invention is to propose a composition, in particular topical, comprising the association of different heterogeneous active substances, which is stable.
- Another aim of the invention is to propose a topical composition which allows rapid and homogeneous application to the skin, transparency of the product after application and leaving on the skin a sensation of hydration and softness, without the sensation of a film applied to the skin.
- a first object of the present invention is an association comprising or constituting a mixture of at least one zinc oxide, acetyl hexapeptide-1 and at least one non-psychotropic phyto-cannabinoid.
- the invention relates to an association as defined above, comprising or constituting a mixture of zinc oxide, acetyl hexapeptide-1 and a non-psychotropic phyto-cannabinoid.
- the non-psychotropic phyto-cannabinoid is chosen from the following group: cannabidiol (CBD), cannabigerol (CBG), cannabinol (CBN), cannabichromene (CBC), cannabivarin (CBDV), cannabicyclol (CBL) and cannabicitran (CBT).
- CBD cannabidiol
- CBG cannabigerol
- CBN cannabinol
- CBC cannabichromene
- CBDV cannabivarin
- CBL cannabicyclol
- CBT cannabicitran
- the invention relates to a combination comprising or constituting a mixture of zinc oxide, acetyl hexapeptide-1 and cannabidiol or cannabigerol.
- the inventors have surprisingly observed that the association of a non-psychotropic phyto-cannabinoid, in particular cannabidiol (CBD) or cannabigerol (CBG), with acetyl hexapeptide-1 which is a stimulant of the natural production of melanin in the skin, and zinc oxide which is an inorganic filter, is found to exhibit synergistic activity for the protection of the skin against solar radiation as indicated in the analyzes of Example 8.
- CBD cannabidiol
- CBG cannabigerol
- the inventors obtained a topical composition comprising the association of cannabidiol, with acetylhexapeptide-1 and zinc oxide having a creamy, stable and homogeneous texture facilitating penetration and coverage of the skin without leaving unsightly white marks.
- the application of this composition gives a feeling of hydration, freshness and softness and not that of a film applied to the skin.
- Cannabidiol can be extracted from several varieties of hemp, including Cannabis sativa, indica and ruderalis. In particular, it can be extracted pure from genetically modified hemp plants or synthesized in the laboratory. Its structure is presented below and it is a lipophilic substance and does not exhibit psychoactive effects. Chemical Structure of Cannabidiol CBD cannabidiol shows potential in reducing the inflammatory response of the skin. Indeed, studies have shown that it has anti-inflammatory properties (Burstein S., Bioorganic & Medicinal Chemistry, Vol 23, 2015, p 1377-1385) and antioxidant properties (Booz GW: Free Radical Biology and Medicine, Vol 51, September 2011, p 1054-1061).
- Cannabigerol is another phyto-cannabinoid, present in low levels, around 1%, in hemp. Its structure is presented below. Chemical structure of cannabigerol (CBG) “Acetyl hexapeptide-1” is a biomimetic peptide mimicking the action of natural peptides which stimulate the synthesis of melanin. Acetyl hexapeptide-1 is a hexapeptide with the sequence “Ac-Nle-Ala-His-(D)Phe-Arg-Trp-NH 2 ”. It is a biomimetic peptide (FR 2835528) of ⁇ -MSH.
- the invention relates to an association as defined above comprising or constituting a mixture of zinc oxide, acetyl hexapeptide-1 and cannabidiol.
- the invention relates to a combination as defined above, comprising or constituting a mixture of zinc oxide, acetyl hexapeptide-1 and cannabigerol.
- the invention relates to a combination as defined above, comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabidiol (CBD) and - of another non-psychotropic phyto-cannabinoid chosen from the group: cannabigerol (CBG), cannabinol (CBN), cannabichromene (CBC), cannabivarin (CBDV), cannabicyclol (CBL) and cannabicitran (CBT).
- CBD cannabigerol
- CBN cannabinol
- CBC cannabichromene
- CBDV cannabivarin
- CBL cannabicyclol
- CBT cannabicitran
- the invention relates to an association as defined above comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabidiol (CBD) and - at least one other non-psychotropic cannabinoid chosen from the group cannabigerol (CBG), cannabinol (CBN), cannabichromene (CBC), cannabivarin (CBDV), cannabicyclol (CBL) and cannabicitran (CBT).
- the non-psychotropic phyto-cannabinoid is obtained according to the laws in force concerning the supply, use and marketing of such a product.
- the cannabidiol and cannabigerol used can be of natural origin and come from plant extracts of different varieties of hemp, in particular Cannabis sativa, indica or ruderalis. According to another particular embodiment, the cannabidiol or cannabigerol used comes from hemp extracts containing less than 0.3% THC, in particular less than 0.2% THC. According to another particular embodiment, the cannabidiol or cannabigerol used is synthesized by methods known to those skilled in the art. According to another particular embodiment, the acetyl hexapeptide-1 used is in the form of an oil.
- Acetyl hexapeptide-1 can be in the form of a hydrophilic solution or as an oily, lipophilic dispersion/emulsion. In oily form, it is marketed for example under the name MelinOil TM (INCI name: Isopropyl Palmitate (and) Lecithin (and) Water (and) Acetyl Hexapeptide-1) by the company Lucas Meyer Cosmetics). MelinOil TM from Lucas Meyer Cosmetics is a dispersion of acetyl hexapeptide-1 in a mixture of lecithin, isopropyl palmitate and water.
- MelinOil TM is a dispersion of acetyl hexapeptide-1 in a mixture of lecithin, isopropyl palmitate and water.
- acetyl hexapeptide-1 is marketed under the name Melitane TM (INCI name: Glycerin (and) Water (and) Dextran (and) Acetyl Hexapeptide-1).
- Melitane TM from Lucas Meyer Cosmetics is a solution of acetyl hexapeptide-1 in a mixture of glycerin, Dextran and water.
- the zinc oxide used is in particulate form in a dispersant.
- the zinc oxide dispersant used is chosen from: caprylic capric triglyceride, dicaprylyl carbonate, C12-15 alkyl benzoate and diisobutyl adipate.
- a ZnO dispersion used is for example marketed under the name Xperse® 501 (INCI name: Zinc oxide (and) Caprylic/capric triglyceride (and) polyhydroxystearic acid) from the company Evercare.
- the invention relates to an association as defined above further comprising titanium dioxide (TiO2).
- the invention relates to an association as defined above, comprising or constituting a mixture of zinc oxide, titanium dioxide, acetyl hexapeptide-1 and a non-psychotropic cannabinoid .
- the non-psychotropic cannabinoid is chosen from the following group: cannabidiol (CBD), cannabigerol (CBG), cannabinol (CBN), cannabichromene (CBC), cannabivarin (CBDV), cannabicyclol ( CBL) and cannabicitran (CBT).
- CBD cannabidiol
- CBG cannabigerol
- CBN cannabinol
- CBC cannabichromene
- CBDV cannabivarin
- CBL cannabicyclol
- CBT cannabicitran
- the invention relates to a combination as defined above, comprising or constituting a mixture of zinc oxide, titanium dioxide, acetyl hexapeptide-1 and cannabidiol or cannabigerol.
- the invention relates to a combination as defined above, comprising or constituting a mixture of zinc oxide, titanium dioxide, acetyl hexapeptide-1 and cannabidiol. In a particular embodiment, the invention relates to a combination as defined above, comprising or constituting a mixture of zinc oxide, titanium dioxide, acetyl hexapeptide-1 and cannabigerol.
- the invention relates to a combination as defined above further comprising: - a solvent for acetyl hexapeptide-1, - an emulsifier for acetyl hexapeptide-1, - a dispersant for acetyl hexapeptide-1, zinc oxide, - and water.
- the solvent for acetyl hexapeptide-1 is chosen from: isopropyl palmitate, glycerin, caprylic capric triglyceride, dicaprylyl carbonate and propanediol.
- the acetyl hexapeptide-1 emulsifier is chosen from: lecithin, sorbitan esters, alkyl polyglucosides and polyoxyethylene derivatives.
- the zinc oxide dispersant is chosen from: caprylic capric triglyceride, dicaprylyl carbonate, C12-15 alkyl benzoate and diisobutyl adipate.
- the invention relates to a combination as defined above further comprising: - a solvent for acetyl hexapeptide-1, in particular isopropyl palmitate, - an emulsifier for acetyl hexapeptide- 1 in particular lecithin, - a dispersant of zinc oxide, in particular caprylic capric triglyceride - and water.
- the invention relates to an association comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabidiol or cannabigerol, - a solvent of acetyl hexapeptide-1, - an emulsifier of acetyl hexapeptide-1, - a dispersant of zinc oxide, - and water.
- the invention relates to an association comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabidiol, - a solvent for acetyl hexapeptide- 1, - an emulsifier of acetyl hexapeptide-1, - a dispersant of zinc oxide, - and water.
- the invention relates to an association comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabigerol, - a solvent for acetyl hexapeptide- 1, - an emulsifier of acetyl hexapeptide-1, - a dispersant of zinc oxide, - and water.
- the invention relates to an association as defined above further comprising: - titanium dioxide, - optionally a coating agent for titanium dioxide such as alumina, titanium hydroxide aluminum, jojoba esters or stearic acid, - possibly a support for the coating agent.
- the invention relates to a combination as defined above further comprising: - titanium dioxide, - a titanium dioxide coating agent such as alumina, titanium hydroxide aluminum, jojoba esters or stearic acid, - a coating agent carrier.
- the invention relates to an association as defined above further comprising: - titanium dioxide, - optionally a coating agent for titanium dioxide such as alumina, titanium hydroxide aluminum, jojoba esters or stearic acid, - optionally a support for the coating agent, in particular stearic acid or polyhydroxystearic acid dispersed in at least one surfactant, in particular chosen from polyglyceryl-2 dipolyhydroxystearate and polyglyceryl-3 diisostearate.
- a coating agent for titanium dioxide such as alumina, titanium hydroxide aluminum, jojoba esters or stearic acid
- - optionally a support for the coating agent in particular stearic acid or polyhydroxystearic acid dispersed in at least one surfactant, in particular chosen from polyglyceryl-2 dipolyhydroxystearate and polyglyceryl-3 diisostearate.
- the invention relates to an association comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabidiol or cannabigerol, - titanium dioxide, - d a solvent for acetyl hexapeptide-1, - an emulsifier for acetyl hexapeptide-1, - a dispersant for zinc oxide, - optionally a coating agent for titanium dioxide, - optionally a support for the coating agent. - and water.
- the invention relates to an association comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabidiol, - titanium dioxide, - a solvent acetyl hexapeptide-1, - an emulsifier of acetyl hexapeptide-1, - a dispersant of zinc oxide, - optionally a coating agent for titanium dioxide, - optionally a support for the coating agent. - and water.
- the invention relates to an association comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabigerol, - titanium dioxide, - a solvent acetyl hexapeptide-1, - an emulsifier of acetyl hexapeptide-1, - a dispersant of zinc oxide, - optionally a coating agent for titanium dioxide, - optionally a support for the coating agent. - and water.
- the invention relates to an association as defined above, in which: - the zinc oxide in dispersion is present in an amount of 10% to 99% by total mass of the association, - acetyl hexapeptide-1 is present at a rate of 1 ppm to 50 ppm, preferably 1 ppm to 10 ppm in total mass of the association, in particular 5 ppm, and - cannabidiol or cannabigerol is present at a rate of 0.1% to 5%, preferably 0.25% to 1.5% as a percentage by total mass of the association.
- the invention relates to an association as defined above, in which: - the zinc oxide in dispersion is present in an amount of 10% to 99% by total mass of the association, - acetyl hexapeptide-1 is present at a rate of 1 ppm to 50 ppm, preferably from 1 ppm to 10 ppm in total mass of the association, in particular 5 ppm, and - cannabidiol is present at a rate of 0, 1% to 5%, preferably 0.25% to 1.5% as a percentage of the total mass of the association.
- the invention relates to an association as defined above, in which: - the zinc oxide in dispersion is present in an amount of 10% to 99% by total mass of the association, - acetyl hexapeptide-1 is present at a rate of 1 ppm to 50 ppm, preferably from 1 ppm to 10 ppm in total mass of the association, in particular 5 ppm, and - cannabigerol is present at a rate of 0, 1% to 5%, preferably 0.25% to 1.5% as a percentage of the total mass of the association.
- the expression “0.1% to 5%” corresponds to the following ranges: from 0.1 to 0.5%: from 0.5 to 1.0%: from 1.0 to 1.5%: from 1 .5 to 2.0%: 2.0 to 2.5%: 2.5 to 3.0%: 3.0 to 3.5%: 3.5 to 4.0%: 4 0 to 4.5%: from 4.5 to 5.0%: and in particular approximately 0.5%.
- the expression “from 0.25 to 1%” corresponds to the following ranges: from 0.25 to 0.50%: from 0.5 to 0.75%: from 0.75 to 1.0%: and in particular approximately 0.50%.
- From 1 ppm to 50 ppm corresponds to the following ranges: from 1 to 2 ppm: from 2 to 5 ppm: from 5 to 10 ppm: from 10 to 15 ppm: from 15 to 20 ppm: from 20 to 25 ppm: from 25 to 30 ppm: from 30 to 35 ppm: from 35 to 40 ppm: from 40 to 45 ppm: from 45 to 50 ppm: in particular around 5 ppm.
- the expression “from 1 ppm to 10 ppm” corresponds to the following ranges: from 1 to 2 ppm: from 2 to 3 ppm: from 3 to 4 ppm: from 4 to 5 ppm: from 5 to 6 ppm: from 6 to 7 ppm: from 7 to 8 ppm: from 8 to 9 ppm: from 9 to 10 ppm: in particular around 5 ppm.
- the expression “10% to 99%” corresponds to the following ranges: from 10 to 20%: from 20 to 30%: from 30 to 40%: from 40 to 50%: from 50 to 60%: from 60 to 70 %: from 70 to 80%: from 80 to 90%: from 90 to 99%.
- the invention relates to an association as defined above, further comprising titanium dioxide in dispersion present in an amount of 7 to 50%, by mass, preferably 10 to 49%.
- 7 to 50% corresponds to the following ranges: from 7 to 15%: from 15 to 20%: from 20 to 30%: from 30 to 40%: from 40 to 50%.
- the invention relates to a combination as defined above in which: - the solvent of acetyl hexapeptide-1, in particular isopropyl palmitate, is present at a rate of 0.15% at 4% by total mass of the association, - the emulsifier of acetyl hexapeptide-1, in particular lecithin, is present at a rate of 0.032% to 0.80% by total mass of the association, - l Water is present at a rate of 0.008% to 0.20%, in total mass of the association.
- the invention relates to an association as defined above, further comprising: - titanium dioxide dispersed in a suitable solvent, in particular caprylic capric triglyceride, present at a rate of from 7% to 50%, by total mass of the association, - a first surfactant, in particular polyglyceryl-2 dipolyhydroxystearate, present at a rate of 1.5% to 5%, in particular 2% to 4%, by total mass of the association - a second surfactant, in particular polyglyceryl-3 diisostearate, present at a rate of 1.5% to 5%, in particular 2% to 4%, in total mass of the association, - optionally a coating agent of the titanium dioxide such as alumina, aluminum hydroxide, jojoba esters or stearic acid, present at a rate of 0.5% to 1.5%, in total mass of the association, - optionally a support for the coating agent, in particular in particular stearic acid or polyhydroxystearic acid dispersed in
- cosmetic composition is meant any composition for cosmetic purposes, in particular a composition which can be brought into contact with the superficial parts of the human body, the skin, in particular the epidermis, the mucous membranes and the scalp.
- cosmetic composition means a non-pharmaceutical composition, that is to say intended for skin which does not require therapeutic treatment, that is to say intended for any area of healthy skin.
- healthy skin means an area of skin to which the association or composition according to the invention is applied, said to be “non-pathological" by a dermatologist, that is to say not showing infection, illness, or wounds or injuries and/or other dermatoses.
- the invention relates to a composition as defined above comprising the combination as defined above which comprises or consists of a mixture of zinc oxide, acetyl hexapeptide-1, of a non-psychotropic phyto-cannabinoid and titanium dioxide, in which said combination is present at a rate of 10% to 60% by mass, preferably 18% to 28% by mass, in particular 25% in a cosmetically acceptable medium .
- a cosmetically acceptable medium within the meaning of the invention is meant a medium compatible with use in cosmetics.
- the invention relates to a composition as defined above, said composition comprising at least one other cosmetic adjuvant or excipient, in particular chosen from: fatty substances, organic solvents, ionic or non-ionic thickeners , softeners, antioxidants, preservatives, emulsifiers, hydrophilic or lipophilic gelling agents, opacifiers, stabilizers, emollients, ⁇ -hydroxy acids, anti-foaming agents, moisturizing agents, vitamins, perfumes, preservatives, surfactants, fillers, sequestrants, polymers, propellants, alkalizing or acidifying agents, and dyes.
- at least one other cosmetic adjuvant or excipient in particular chosen from: fatty substances, organic solvents, ionic or non-ionic thickeners , softeners, antioxidants, preservatives, emulsifiers, hydrophilic or lipophilic gelling agents, opacifiers, stabilizers, emollients, ⁇ -hydroxy acids
- the composition may contain any other ingredient usually used in cosmetics, in particular for the manufacture of compositions intended for exposure to the sun in the form of emulsions.
- Fatty substances may consist of an oil or wax or mixtures thereof, and they also include fatty acids, fatty alcohols and fatty acid esters.
- Fatty acid esters can be of plant origin (coconut, palm), or of synthetic origin.
- the oils can be chosen from vegetable, mineral and synthetic oils, and in particular from petroleum jelly, polybutenes and isobutenes, isoparaffins and poly- ⁇ -olefins.
- the waxes can be chosen from fossil, vegetable, mineral and synthetic waxes known per se, and beeswax.
- the thickeners can be chosen in particular from crosslinked polyacrylic acids, and guar gums and modified or unmodified celluloses such as hydroxy-propylated guar gum, methylhydroxyethylcellulose and hydroxy-propyl-methylcellulose.
- antioxidants we can cite, for example, tocopherol (vitamin E) or ascorbic acid (vitamin C).
- vitamin C ascorbic acid
- preservatives we can cite, for example, benzalkonium chloride, phenoxyethanol, or sorbic acid.
- emulsifiers we can cite, for example, polyol fatty acid esters, for example glycerol stearate, PEG-40 stearate, sorbitan réellestearate, polyoxyethylene sorbitan stearates (Tween®-60 or Tween®-20), ceteareth-20 (ethoxylated), cetyl alcohol.
- hydrophilic gelling agent we can cite, for example, carboxyvinyl polymers, acrylic copolymers, polysaccharides, natural gums, such as xanthan gum, clays, polyacrylamides.
- lipophilic gelling agent we can cite hydrophobic silica, clays modified with fatty chains.
- Said adjuvants or excipients may be present in the composition in quantities conventionally used in cosmetics, in particular from 0.01 to 20% as a percentage by mass relative to the total mass of the composition.
- the invention relates to a composition as defined above, said cosmetic composition being formulated for topical application, in particular topical application of the skin, said composition being in particular in the form of an aerosol , an emulsion, a cream, a gel, a dispersion, a serum, a foam, a body milk or an anhydrous balm, preferably in the form of a body milk or cream.
- Another object of the present invention relates to the use of a combination of the invention as defined above or of a cosmetic composition according to the invention as defined above as a protective agent from solar radiation (solar product ), in particular as sun milk.
- Another object of the present invention is the use of an association according to the invention as defined above, or of a cosmetic composition according to the invention as defined above, in the cosmetic treatment of healthy skin. , particularly sensitive and/or reactive.
- sensitive and/or reactive skin means any skin subject to a feeling of discomfort which may manifest itself by more or less diffuse and localized redness, itching, tightness, irritation, burning sensations.
- the present invention relates to the cosmetic use of an association according to the invention, or of a cosmetic composition according to the invention as defined above, in the cosmetic treatment of sensitive skin and/or or reactive.
- cosmetic treatment means a non-therapeutic treatment, that is to say intended for any area of healthy skin.
- Another object of the present invention is a method of cosmetic treatment of healthy skin, in particular sensitive skin, comprising the topical application to healthy skin of an association according to the invention as defined above, or of a cosmetic composition according to the invention as defined above to reduce the sensations of tingling, tingling, itching or pruritus, burning, heating, discomfort or tightness of the skin.
- the term “cosmetic treatment method” means a method which does not require therapeutic treatment, that is to say a treatment method intended for any area of healthy skin.
- the present invention relates to a method of cosmetic treatment, in particular of sun protection, for healthy skin, in particular sensitive skin, comprising an application of 1 to 5 times per day, in particular an application every two hours on a healthy skin.
- the present invention relates to a method of cosmetic treatment, in particular sun protection, erythema and inflammation. of the skin due to exposure to the sun, comprising the application to the skin of an association according to the invention, or of a cosmetic composition according to the invention.
- compositions comprising as active substance, an association according to the invention as defined above, with a pharmaceutically acceptable excipient, said composition being in particular formulated for a topical application, in particular an application topical to the skin, said composition being in particular in the form of an aerosol, an emulsion, a cream, a gel, a dispersion, a serum, a foam, a body milk or anhydrous balm.
- skin composition is meant any composition for pharmaceutical purposes which can be brought into contact with the superficial parts of the human body, the skin, in particular the epidermis.
- the invention relates to a dermatological composition according to the invention as defined above, further comprising one or more active substances chosen from agents which fight against glycation, agents stimulating the synthesis of collagen or elastin or preventing their degradation, agents stimulating the synthesis of glycosaminoglycans or proteoglycans or preventing their degradation, anti-radical or anti-pollution agents, draining or detoxifying agents, desquamating agents, soothing agents and/or anti-irritants, astringent agents, agents acting on microcirculation, and mixtures thereof.
- active substances chosen from agents which fight against glycation, agents stimulating the synthesis of collagen or elastin or preventing their degradation, agents stimulating the synthesis of glycosaminoglycans or proteoglycans or preventing their degradation, anti-radical or anti-pollution agents, draining or detoxifying agents, desquamating agents, soothing agents and/or anti-irritants, astringent agents, agents acting on microcirculation, and mixtures thereof.
- compositions according to the invention may also comprise one or more other additional active substances, the skilled person however ensuring that the possible complementary active compounds, as well as their proportions, are chosen in such a way that the advantageous properties recognized in the compositions according to the invention are not altered.
- the invention relates to a dermatological composition according to the invention as defined above, for its use for photoprotection against solar radiation.
- Another object of the present invention relates to a process for preparing a composition comprising the combination of a mixture of zinc oxide, acetyl hexapeptide-1 and cannabidiol or cannabigerol comprising the following steps: - a first step of preparing the aqueous phase A, said phase A comprising water, NaCl or MgSO 4 , and propanediol, comprising the dissolution of the elements of phase A brought to temperature, in particular from 70 to 80°C, - a second step of introducing the elements of phase B, said phase B comprising cannabidiol, acetyl hexapeptide-1 and zinc oxide, optionally TiO 2 , comprising: ⁇ the introduction of cannabidiol, acetyl hexapeptide-1 and other elements of phase B with deflocculating stirring, preferably from 800 to 1800 rpm, in particular for 10 min, preferably from 70 to 80°C, in the aqueous phase A, to form
- formulations according to the invention are given without limitation.
- the inventors have developed a formulation with the proportions indicated in Table 1.
- Said formulation comprises a mixture of Xperse® 501 comprising zinc oxide, Mélinoil TM comprising acetyl hexapeptide-1 and cannabidiol.
- the formulation in Table 1 can be used as an SPF30 sunscreen composition.
- Table 1 Formulation of an emulsion as SPF30 sunscreen
- Another formulation developed by the Inventors is that with the proportions indicated in Table 2.
- Said formulation comprises a mixture of Xperse® 501 including zinc oxide, Mélinoil TM comprising acetyl hexapeptide-1, cannabidiol and GranLux®TGL-50 comprising titanium dioxide.
- Table 2 can be used in particular as an SPF50 sunscreen composition.
- Table 2 Formulation of an emulsion as SPF50 sunscreen
- LIST OF FIGURES Figure 1 represents the UV absorption spectrum of an SPF30 sun cream according to the invention comprising ZnO, Melinoil TM and CBD.
- Figure 2 represents the UV absorption spectrum of an SPF50 sun cream according to the invention comprising ZnO, TiO 2 , Melinoil TM and CBD.
- the sun protection cream of Example 1 was prepared following the protocol described below.
- Phase A solution including water, NaCl chloride and propanediol were weighed separately and mixed forming a solution.
- the solution was stirred to dissolve the NaCl salt at a temperature of 72 to 75°C.
- the ingredients of phase B were weighed and were introduced into the beaker to the solution of phase A, except the ingredient comprising ZnO (Xperse®501) and Lauroy lysine (Amihope®LL), under deflocculating stirring.
- Example 3 Composition of an SPF50 sunscreen Table 4. Composition of an SPF50 sun milk of an SPF50 sun cream The emulsion of Example 3 was prepared hot according to the protocol described below. In a beaker, the ingredients of the Phase A solution including water, sodium chloride NaCl and propanediol were weighed separately and mixed. The solution was stirred to dissolve the NaCl salt at a temperature of 70 to 75°C.
- phase B The ingredients of phase B were weighed and were introduced into the beaker with the solution of phase A, except the ingredient comprising ZnO (Xperse®501) and that comprising TiO 2 (GrandLux®, under deflocculating stirring). from 1000 to 1800 rpm for 10 min at a temperature of 75 to 80 ° C, forming a clear solution.
- the ingredients comprising ZnO and TiO 2 were then added with vigorous stirring to deflocculate, for at least 10 minutes, while maintaining the temperature of 75 to 80 ° C.
- the aqueous phase of the solution in the beaker was slowly sucked off while the solution was vigorously stirred from 800 rpm to 1800 rpm, for 10 minutes while maintaining the temperature.
- the method makes it possible to provide: - the protection coefficient “SPF”, - the UVA protection factor “PF-UVA”, and - the Critical Wavelength “LOC”, which must not be less than 370 nm, for that the formulated products can claim conformity of their UVA protection value, through a UVA logo.
- SPDF protection coefficient
- PF-UVA UVA protection factor
- LOC Critical Wavelength
- F( ⁇ ) I / I0
- the wavelength increment is 1nm.
- the sample is spread on Sunplate polymethyl methacrylate (PMMA) plates (Helioscience), measuring 5 x 5 cm, having a rough phase obtained by sandblasting.
- PMMA polymethyl methacrylate
- the tested product is spread according to the quantity recommended by the standards, i.e. 1.3 mg/cm 2 for PMMA. It can either be spread by spraying the product onto the plates, or by application to the rough phase of the plate using a bare finger pre-saturated with product in a standardized and controlled manner in order to obtain a film homogeneous.
- the sample is exposed to 2 minimum “MED” erythemal doses.
- the MED value was chosen at 550 W/m 2 , this value corresponding to exposure to zenithal sunlight. With this standard solar light, while receiving 2 MED, the product will therefore receive: 400 J/m 2 .
- the measuring device is calibrated beforehand with PMMA plates. The tests are carried out on 3 PMMA plates on which the product is deposited. 4 measurements per plate were carried out with the spectrometer. Determination of the SPF value The SPF in vitro is expressed from the entire residual UVB and UVA spectrum having passed through the layer of cream spread on the plate. However, this wave function T( ⁇ ) must be multiplied by: - A first wave function which expresses the spectral characteristic of the sun S( ⁇ ).
- ⁇ c corresponds to the wavelength for which the area under the absorption curve reaches 90 % of total area from 290 nm to 400 nm.
- the critical wavelength will therefore be determined according to the formula: With : - ⁇ c corresponds to the critical wavelength - A( ⁇ ) corresponds to the absorption - d( ⁇ ) corresponds to the wavelength interval between measurements
- the critical wavelength ⁇ c of the product tested is obtained by calculating the arithmetic mean of the different measurements: all the selected measurements are taken into account for the calculation of the statistical dispersion.
- Statistical expression of the results The average protection index of the preparation studied is obtained by calculating the arithmetic mean of the protection indices of each test. The calculations are obtained using specific software which provides immediate access and without any manipulation to all the calculations necessary to obtain the values.
- Example 6 Protection tests of an SPF30 cream
- the sun protection of the SPF 30 sun cream of the invention according to Example 1 was analyzed according to the method presented in Example 5 with a spreading of the sun cream on the plates by spraying. The results are reported in Table 5.
- Table 5 Protection analysis of an SPF 30 cream
- the SPF30 sun milk of the invention according to the composition described in Example 1 has well-balanced protection, between UVB and UVA.
- Example 7 – SPF50 protection tests The sun protection of the SPF 50 sun cream of the invention according to Example 3 was analyzed according to the method presented in Example 5 with spreading of the sun cream on the plates by spraying. The results are reported in table 6.
- Example 6 Protection analysis of an SPF 50 cream As indicated in the UV spectrum in Figure 2, the SPF50 sun milk of the invention according to the composition described in Example 3, has well-balanced protection, between UVB and UVA.
- Example 8 Comparative tests In order to evaluate the influence of the combination of zinc oxide, acetyl hexapeptide-1 and a non-psychotropic cannabinoid such as cannabidiol, four sunscreen compositions distinguished by the presence of these different components have been prepared: - Cream 1, also called “base 30”, is a sun protection factor SPF30 cream comprising zinc dioxide; its composition is reported in table 7 above; - Cream 2, called “base 30 + Mélinoil TM ”, corresponds to the “base 30” cream above additionally comprising Mélinoil TM , i.e.
- Cream 3 corresponds to the “base 30” cream above additionally comprising canabidiol (CBD), of composition according to Table 9 -
- the cream 4 called “base 30 + Mélinoil TM + CBD” corresponds to the “base 30” cream additionally comprising Mélinoil TM and cannabidiol (CBD), of composition according to table 10.
- the four creams tested were prepared within a 24-hour interval with the same operator, the same equipment and in particular the same batch numbers of cosmetic ingredients.
- the fluctuations which may come from external experimental conditions such as the variability of the composition of the batches of cosmetic ingredients, in particular the ZnO content in the corresponding cosmetic ingredient, are minimized.
- the batch number of the cosmetic ingredient containing ZnO used to prepare the four creams is different from that of Example 1.
- Table 7 Composition of cream 1 of “base 30” with SPF30 index including ZnO Table 8: Composition of cream 2 “base 30 + Mélinoil TM ” Table 10: Composition of cream 4 “base 30 + Mélinoil TM + CBD” Sun protection of the four sunscreen compositions (cream 1 “base 30”, cream 2 “base 30 + Mélinoil TM ”, cream 3 “base 30 + CBD” and cream 4 "base 30 + Mélinoil TM +CBD) presented respectively in tables 7 to 10 were analyzed according to the method presented in example 5 with spreading of the creams on the plates by a manual application standardized to the using a bare finger pre-saturated in cream.
- Table 11 Sun protection of different creams comprising different components of the combination of zinc oxide, acetyl hexapeptide-1 and cannabidiol
- Table 11 The results in Table 11 relating to the analyzes of the sun protection of the four creams each comprising different components of the association: zinc oxide, acetyl hexapeptide-1 and cannabidiol, demonstrate that in a basic sun cream with an SPF30 index containing zinc oxide (ZnO), Melinoil TM , consequently acetyl hexapeptide-1, potentiates the activity of cannabidiol (CBD) with respect to the SPF sun protection index and the UVA value, by increasing these values.
- ZnO zinc oxide
- Melinoil TM cannabidiol
- Mélinoil TM reduces the UVA value by -10.5% when it is combined alone with a base 30 sunscreen with an SPF30 index containing zinc oxide. , it potentiates and increases it when combined with CBD.
- an increase of 2.8 points in the UVA index i.e. 15.5%
- an increase of 4.5 points i.e. 24.9%
Abstract
The present invention relates to new compositions combining at least one inorganic solar filter and to the use thereof in cosmetics, and to the pharmaceutical use thereof, in particular in dermatology, in particular as solar protection for the skin.
Description
DESCRIPTION TITRE : NOUVELLES COMPOSITIONS ASSOCIANT AU MOINS UN FILTRE SOLAIRE INORGANIQUE ET LEUR UTILISATION DOMAINE DE L’INVENTION La présente invention concerne de nouvelles compositions associant au moins un filtre solaire inorganique et leur utilisation en cosmétique, ainsi que leur utilisation pharmaceutique, notamment en dermatologie, en particulier comme protection solaire de la peau. ETAT DE LA TECHNIQUE ANTERIEURE L’exposition aux rayonnements solaires présente des effets bénéfiques, mais peut engendrer également lors d’une surexposition des conséquences délétères sur le plan cutané à la fois à court et à long termes tels que l’érythème solaire dit « coup de soleil », le vieillissement accéléré des tissus, les photodermatoses, voire des carcinomes ou des mélanomes. L’un des principaux facteurs d’agression de la peau est considéré comme étant les rayonnements solaires ultra-violets UV-A (λ = 320-400 nm) et UV-B (λ = 290-320 nm). Les rayonnements UV-B atteignant la surface de la peau peuvent causer, en parallèle du bronzage, des brûlures et des signes de vieillissement. Les rayons UV-A peuvent pénétrer plus profondément dans la peau, causant la libération de radicaux libres, provoquant des modifications de l’ADN. Ainsi les UV présentent un effet pro-oxydant. Le « coup de soleil » ou l’érythème induit par l’irradiation solaire, ou érythème actinique, correspond cliniquement à des caractéristiques histologiques marquées par la présence de cellules dyskératosiques ou « sunburn cells », correspondant à des kératinocytes en apoptose. L’érythème actinique est lié principalement aux UV-B mais également à l’action des UVA. Les conséquences de l’érythème UV-Induit sont multiples, impliquant les dommages de l’ADN, la génération d’espèces réactives de l’oxygène (ERO) et un ensemble de médiateurs de l’inflammation. Une photoprotection naturelle peut être induite par la peau qui dispose de systèmes intrinsèques de défense lui permettant de lutter contre les agressions du soleil. Elle s’exprime par une production de pigments mélaniques photoprotecteurs, ou encore par un épaississement de la couche cornée avec un plus grand nombre de couches de kératinocytes dans l’épiderme. Pour une exposition prolongée ou intensive aux rayonnements solaires, une photoprotection peut aussi être induite et assurée par des moyens tels que l’application topique de produits cosmétiques photoprotecteurs tels que les crèmes solaires. Ces produits ou préparations
renferment le plus souvent, solubilisées ou dispersées dans un excipient, des substances protectrices qu’on peut classer en trois grandes catégories : - les filtres physiques, dont l’action vise à réfléchir l’ensemble des radiations solaires et par conséquent à empêcher leur pénétration dans la peau : - les filtres chimiques, dont l’action vise à absorber une partie des radiations solaires, généralement les rayonnements UV-A et UV-B puis à libérer l’énergie photonique absorbée par échange thermique avec la peau : - et enfin les agents photoprotecteurs dits actifs par opposition aux filtres, et qui sont en général des substances capables de piéger les espèces réactives de l’oxygène ("ERO" ou "ROS") formées lorsque les radiations sont absorbées par des molécules naturellement présentes dans la peau (mécanisme de photosensibilisation). Plus récemment, d’autres stratégies de protection ont été développées avec l’introduction dans les formules antisolaires d’agents actifs tels que des enzymes de réparation de l’ADN, des peptides protégeant l’ADN des dégâts liés aux UVA et des composés antioxydants tels que les vitamines C et E, ou des polyphénols (Matsui M.S. et al., J. Invest. Dermatol., 2009, vol.14, pp.56-59). L’intérêt pour cette stratégie a été renforcée par la mise en évidence récente de la capacité des rayonnements visible (400-700 nm) et proche infra-rouge (700-1440 nm) à induire aussi la formation de ROS dans la peau (Liebel F. et al., J. Invest. Dermatol.,2012, vol. 132, pp.1901-1907 : Schroeder P. et al., Exp. Gerontol., 2008, vol.43, pp.629-632). De telles préparations topiques sont en général caractérisées par un facteur de protection solaire "SPF" (Sun Protection Factor), indicateur du niveau de protection contre l’érythème solaire, adapté à des conditions d’ensoleillement et des phototypes de peau particuliers. Pour les formules antisolaires à fort SPF, les substances protectrices telles que les filtres physiques, les filtres chimiques et les agents actifs photoprotecteurs sont souvent associés. Cependant, l’association de tels ingrédients actifs hétérogènes dans des formules topiques n’est pas sans poser des problèmes : manque de stabilité, coût, biodégradabilité, formation au contact de l’oxygène, ou de ses espèces réactives, de sous-produits dont la toxicologie est souvent inconnue. Des filtres chimiques performants ont été développés, présentant une photostabilité accrue et de larges spectres d'absorption vis-à-vis des UV-A et/ou UV-B. Ces filtres chimiques assurent une bonne photoprotection mais leur utilisation massive est de plus en plus décriée car ils possèdent souvent des propriétés allergisantes et peuvent être toxiques ou nuisibles s'ils pénètrent à travers la barrière épidermique. La pénétration cutanée de ces filtres solubles est une source d’inquiétude pour leurs effets cumulatifs. Ainsi, plusieurs filtres sont soupçonnés d'être des perturbateurs endocriniens. En outre, les filtres sont souvent peu biodégradables et
deviennent des polluants environnementaux. Entre autres exemples d'effet écotoxique, les filtres solaires auraient un impact négatif sur les récifs marins et ils pourraient participer au phénomène de blanchiment corallien. La tendance générale est donc de limiter l’utilisation des filtres chimiques synthétiques. Au-delà de ses considérations, l’aspect sensoriel pour l’utilisateur lors de l’application topique de ses préparations doit aussi être pris en considération. Les filtres physiques utilisés dans les préparations de protection solaire sont la plupart du temps des substances inertes d’origine minérale telles que l’oxyde de zinc (ZnO) et le dioxyde de titane (TiO2) l’oxyde de cérium, l’oxyde de zirconium. Leur utilisation dans des produits de protection solaire reste toutefois malaisée, avec l’apparition de traces blanches lors de l’application. Plus de soixante phyto-cannabinoïdes sont connus, dont des cannabinoïdes non psychotropes tels que le cannabidiol (CBD), le cannabigérol (CBG), le cannabinol (CBN), le cannabichromène (CBC), le cannabivarin (CBDV), le cannabicyclol (CBL) et le cannabicitran (CBT). On entend par « phyto-cannabinoïdes » des cannabinoïdes d’origine végétale, c’est-à-dire issus des plantes. Ainsi, les phyto-cannabinoïdes non psychotropes contenus dans le chanvre tels que le cannabidiol et le cannabigérol aident à soulager les affections cutanées tels que l’inflammation et présentent de façon inattendue un effet d’atténuation de l’apoptose cellulaire induite par les rayonnements UV. D’autres substances actives telles que les peptides biomimétiques peuvent avoir un effet de protection de la peau contre les rayonnements solaires. En effet, les peptides biomimétiques miment l’action des peptides naturels, tout en étant biocompatibles. Parmi ces peptides biomimétiques, l’acétyl hexapeptide-1, agoniste de l’alpha-MSH en stimulant la synthèse de la mélanine, permet de renforcer la capacité naturelle de photoprotection de la peau en la protégeant des dégâts de l’ADN initiés par les UV et diminue l’apparition d’érythème solaire, apaise la peau abîmée par le soleil et limite les signes de photovieillissement. PROBLEME TECHNIQUE Il existe un besoin en compositions d’application topique permettant de protéger la peau contre les rayonnements solaires et de la prévenir de ses ravages. Il existe un besoin de compositions topiques à forte protection solaire avec une texture permettant une application aisée et un recouvrement optimal de la peau lors de l’application. Il existe un besoin de compositions topiques à forte protection solaire qui après application laisse une sensation d’hydratation et de douceur et ne laisse pas la sensation d’un film collant appliqué sur la peau et ne laissant pas de traces blanches désagréables sur la peau.
Il existe un besoin de compositions de protection solaire limitant l’utilisation de filtres chimiques solaires à base de produits naturels, biocompatibles et non toxiques, ou à base de produits respectueux pour l’environnement. L’un des buts de l’invention est de proposer une association de substances actives permettant de protéger la peau contre les rayonnements solaires, et permettant notamment de prévenir les ravages d’une exposition prolongée au soleil tels que l’érythème solaire. Un autre but de la présente invention est de proposer une association de substances actives permettant de protéger la peau contre les rayonnements solaires à base de produits naturels, dont par exemple des extraits de plantes, et/ou à base de produits biomimétiques, inspirés de la nature et biocompatibles avec la peau. Un autre but de la présente invention est de proposer une composition, notamment topique, comprenant l’association de différentes substances actives hétérogène, qui est stable. Un autre but de l’invention est de proposer une composition topique qui permet une application rapide et homogène sur la peau, une transparence du produit après application et laissant sur la peau une sensation d’hydratation et de douceur, sans la sensation d’un film appliqué sur la peau. Un premier objet de la présente invention est une association comprenant ou constituant en un mélange d’au moins un oxyde de zinc, d’acétyl hexapeptide-1 et d’au moins un phyto- cannabinoïde non psychotrope. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus, comprenant ou constituant en un mélange d’oxyde de zinc, d’acétyl hexapeptide-1 et d’un phyto-cannabinoïde non psychotrope. Dans un mode de réalisation particulier, le phyto-cannabinoïde non psychotrope est choisi parmi le groupe suivant : le cannabidiol (CBD), le cannabigérol (CBG), le cannabinol (CBN), le cannabichromène (CBC), le cannabivarin (CBDV), le cannabicyclol (CBL) et le cannabicitran (CBT). Dans un mode de réalisation particulier, l’invention concerne une association comprenant ou constituant en un mélange d’oxyde de zinc, d’acétyl hexapeptide-1 et de cannabidiol ou de cannabigérol. Ainsi, parmi les différentes associations de substances actives pour la protection solaire, les inventeurs ont de façon surprenante observé que l’association d’un phyto-cannabinoïde non psychotrope, en particulier le cannabidiol (CBD) ou le cannabigérol (CBG), avec de l’acétyl hexapeptide-1 qui est un stimulant de la production naturelle de la mélanine dans la peau, et de l’oxyde de zinc qui est un filtre inorganique, se révèle présentée une activité synergique
pour la protection de la peau contre les rayonnements solaires comme indiqué dans les analyses de l’exemple 8. Les inventeurs ont obtenu une composition topique comprenant l’association du cannabidiol, avec l’acétylhexapeptide-1 et de l’oxyde de zinc présentant une texture onctueuse, stable et homogène facilitant la pénétration et le recouvrement de la peau sans laisser de traces blanches disgracieuses. L’application de cette composition donne une sensation d’hydratation, de fraicheur et de douceur et non celle d’un film apposé sur la peau. Le cannabidiol (CBD) ou 2-[(1R,6R)-6-isopropenyl-3-methylcyclohex-2-en-1-yl]-5- pentylbenzene-1,3-diol, est le second phyto-cannabinoïde le plus abondant dans le chanvre. Le cannabidiol peut être extrait de plusieurs variétés de chanvre, dont le Cannabis sativa, indica et ruderalis. Il peut notamment être extrait pur à partir de plantes de chanvre génétiquement modifiées ou synthétisé en laboratoire. Sa structure est présentée ci-dessous et il s’agit d’une substance lipophile ne présente pas d’effet psychoactif.
Structure chimique du cannabidiol Le cannabidiol CBD présente un potentiel dans la réduction de la réponse inflammatoire de la peau. En effet des études ont montré qu’il présente des propriétés anti-inflammatoires (Burstein S., Bioorganic & Medicinal Chemistry, Vol 23, 2015, p 1377-1385) et antioxydantes (Booz G.W. : Free Radical Biology and Medecine, Vol 51, Septembre 2011, p 1054-1061). Le cannabigérol (CBG) est un autre phyto-cannabinoïde, présent en faible teneur, de l’ordre de 1%, dans le chanvre. Sa structure est présentée ci-dessous.
Structure chimique du cannabigérol (CBG) L’« acétyl hexapeptide-1 » est un peptide biomimétique mimant l’action de peptides naturels qui stimulent la synthèse de la mélanine. L’acétyl hexapeptide-1 est un hexapeptide de séquence « Ac-Nle-Ala-His-(D)Phe-Arg-Trp-NH2 ». Il est peptide biomimétique (FR 2835528)
de l’α-MSH. La structure de la molécule, dont le numéro CAS est [448944-47-6], est présentée ci-dessus.
Structure chimique du l’acétyl Hexapeptide-1 Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus comprenant ou constituant en un mélange d’oxyde de zinc, d’acétyl hexapeptide-1 et de cannabidiol. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus, comprenant ou constituant en un mélange d’oxyde de zinc, d’acétyl hexapeptide-1 et de cannabigérol. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus, comprenant ou constituant en un mélange : - d’oxyde de zinc, - d’acétyl hexapeptide-1, - de cannabidiol (CBD) et - d’un autre phyto-cannabinoïde non psychotrope choisi parmi le groupe : cannabigérol (CBG), cannabinol (CBN), cannabichromène (CBC), cannabivarin (CBDV), cannabicyclol (CBL) et cannabicitran (CBT). Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus comprenant ou constituant en un mélange : - d’oxyde de zinc, - d’acétyl hexapeptide-1, - de cannabidiol (CBD) et
- d’au moins un autre cannabinoïde non psychotrope choisi parmi le groupe cannabigérol (CBG), cannabinol (CBN), cannabichromène (CBC), cannabivarin (CBDV), cannabicyclol (CBL) et cannabicitran (CBT). Dans un mode de réalisation particulier, le phyto-cannabinoïde non psychotrope est obtenu selon les lois en vigueur concernant la fourniture, l’utilisation et la commercialisation d’un tel produit. Le cannabidiol et le cannabigérol utilisés peuvent être d’origine naturel et provenir d’extraits de plantes de différentes variétés de chanvre, en particulier du Cannabis sativa, indica ou ruderalis. Selon un autre mode de réalisation particulier, le cannabidiol ou le cannabigérol utilisé provient d’extraits de chanvre contennant moins de 0,3 % de THC, en particulier moins de 0,2% de THC. Selon un autre mode de réalisation particulier, le cannabidiol ou le cannabigérol utilisé est synthétisé par des méthodes connues de l’Homme du métier. Selon un autre mode de réalisation particulier, l’acétyl hexapeptide-1 utilisé est sous forme d’huile. L’acétyl hexapeptide-1 peut se présenter sous forme d’une solution hydrophile ou en dispersion/émulsion huileuse, lipophile. En forme huileuse, il est commercialisé par exemple sous le nom de MelinOilTM (Nom INCI : Isopropyl Palmitate (and) Lecithin (and) Water (and) Acetyl Hexapeptide-1) par la société Lucas Meyer Cosmetics). Le MelinOilTM de la société Lucas Meyer Cosmetics est une dispersion d’acétyl hexapeptide-1 dans un mélange de lécithine, de palmitate d’isopropyle et d’eau. En forme aqueuse, l’acétyl hexapeptide-1 est commercialisé sous le nom de MelitaneTM (Nom INCI : Glycerin (and) Water (and) Dextran (and) Acetyl Hexapeptide-1). Le MelitaneTM de la société Lucas Meyer Cosmetics est une solution d’acétyl hexapeptide-1 dans un mélange de glycérine, de Dextran et d’eau. Selon un autre mode de réalisation particulier, l’oxyde de zinc utilisé est sous forme particulaire dans un dispersant. Selon un autre mode de réalisation particulier, le dispersant de l’oxyde de zinc utilisé est choisi parmi : le triglycéride caprylique caprique, le dicaprylyl carbonate, le C12-15 alkyl benzoate et le diisobutyl adipate.
Une dispersion de ZnO utilisée est par exemple commercialisée sous le nom de Xperse® 501 (Nom INCI : Zinc oxide (and) Caprylic/capric triglyceride (and) polyhydroxystearic acid) de la société Evercare. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus comprenant en outre du dioxyde de titane (TiO2). Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus, comprenant ou constituant en un mélange d’oxyde de zinc, de dioxyde de titane, d’acétyl hexapeptide-1 et d’un cannabinoïde non psychotrope. Dans un mode de réalisation particulier, le cannabinoïde non psychotrope est choisi parmi le groupe suivant : le cannabidiol (CBD), le cannabigérol (CBG), le cannabinol (CBN), cannabichromène (CBC), le cannabivarin (CBDV), le cannabicyclol (CBL) et le cannabicitran (CBT). Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus, comprenant ou constituant en un mélange d’oxyde de zinc, de dioxyde de titane, d’acétyl hexapeptide-1 et de cannabidiol ou de cannabigérol. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus, comprenant ou constituant en un mélange d’oxyde de zinc, de dioxyde de titane, d’acétyl hexapeptide-1 et de cannabidiol. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus, comprenant ou constituant en un mélange d’oxyde de zinc, de dioxyde de titane, d’acétyl hexapeptide-1 et de cannabigérol. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus comprenant en outre : - un solvant de l’acétyl hexapeptide-1, - un émulsifiant de l’acétyl hexapeptide-1, - un dispersant de l’oxyde de zinc, - et de l’eau. Dans un mode de réalisation particulier, le solvant de l’acétyl hexapeptide-1 est choisi parmi : le palmitate d’isopropyle, la glycérine, le triglycéride caprylique caprique, le dicaprylyl carbonate et le propanediol. Dans un mode de réalisation particulier, l’émulsifiant de l’acétyl hexapeptide-1 est choisi parmi : la lécithine, les esters de sorbitan, les alkyl polyglucosides et les dérivés polyoxyéthylénés.
Dans un mode de réalisation particulier, le dispersant de l’oxyde de zinc est choisi parmi : le triglycéride caprylique caprique, le dicaprylyl carbonate, le C12-15 alkyl benzoate et le diisobutyl adipate. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus comprenant en outre : - un solvant de l’acétyl hexapeptide-1 en particulier le palmitate d’isopropyle, - un émulsifiant de l’acétyl hexapeptide-1 en particulier la lécithine, - un dispersant de l’oxyde de zinc, en particulier le triglycéride caprylique caprique - et de l’eau. Dans un mode de réalisation particulier, l’invention concerne une association comprenant ou constituant en un mélange : - d’oxyde de zinc, - d’acétyl hexapeptide-1, - de cannabidiol ou de cannabigérol, - d’un solvant de l’acétyl hexapeptide-1, - d’un émulsifiant de l’acétyl hexapeptide-1, - d’un dispersant de l’oxyde de zinc, - et de l’eau. Dans un mode de réalisation particulier, l’invention concerne une association comprenant ou constituant en un mélange : - d’oxyde de zinc, - d’acétyl hexapeptide-1, - de cannabidiol, - d’un solvant de l’acétyl hexapeptide-1, - d’un émulsifiant de l’acétyl hexapeptide-1, - d’un dispersant de l’oxyde de zinc, - et de l’eau. Dans un mode de réalisation particulier, l’invention concerne une association comprenant ou constituant en un mélange : - d’oxyde de zinc, - d’acétyl hexapeptide-1, - de cannabigérol, - d’un solvant de l’acétyl hexapeptide-1,
- d’un émulsifiant de l’acétyl hexapeptide-1, - d’un dispersant de l’oxyde de zinc, - et de l’eau. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus comprenant en outre : - du dioxyde de titane, - éventuellement un agent d’enrobage du dioxyde de titane tel que l’alumine, l’hydroxyde d’aluminium, les esters de jojoba ou l’acide stéarique, - éventuellement un support de l’agent d’enrobage. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus comprenant en outre : - du dioxyde de titane, - un agent d’enrobage du dioxyde de titane tel que l’alumine, l’hydroxyde d’aluminium, les esters de jojoba ou l’acide stéarique, - un support de l’agent d’enrobage. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus comprenant en outre : - du dioxyde de titane, - éventuellement un agent d’enrobage du dioxyde de titane tel que l’alumine, l’hydroxyde d’aluminium, les esters de jojoba ou l’acide stéarique, - éventuellement un support de l’agent d’enrobage, en particulier l’acide stéarique ou l’acide polyhydroxystéarique en dispersion dans au moins un tensio-actif, en particulier choisi parmi le polyglycéryl-2 Dipolyhydroxystearate et le polyglycéryl-3 diisostearate. Dans un mode de réalisation particulier, l’invention concerne une association comprenant ou constituant en un mélange : - d’oxyde de zinc, - d’acétyl hexapeptide-1, - de cannabidiol ou de cannabigérol, - du dioxyde de titane, - d’un solvant de l’acétyl hexapeptide-1, - d’un émulsifiant de l’acétyl hexapeptide-1, - d’un dispersant de l’oxyde de zinc,
- éventuellement un agent d’enrobage du dioxyde de titane, - éventuellement un support de l’agent d’enrobage. - et de l’eau. Dans un mode de réalisation particulier, l’invention concerne une association comprenant ou constituant en un mélange : - d’oxyde de zinc, - d’acétyl hexapeptide-1, - de cannabidiol, - du dioxyde de titane, - d’un solvant de l’acétyl hexapeptide-1, - d’un émulsifiant de l’acétyl hexapeptide-1, - d’un dispersant de l’oxyde de zinc, - éventuellement un agent d’enrobage du dioxyde de titane, - éventuellement un support de l’agent d’enrobage. - et de l’eau. Dans un mode de réalisation particulier, l’invention concerne une association comprenant ou constituant en un mélange : - d’oxyde de zinc, - d’acétyl hexapeptide-1, - de cannabigérol, - du dioxyde de titane, - d’un solvant de l’acétyl hexapeptide-1, - d’un émulsifiant de l’acétyl hexapeptide-1, - d’un dispersant de l’oxyde de zinc, - éventuellement un agent d’enrobage du dioxyde de titane, - éventuellement un support de l’agent d’enrobage. - et de l’eau. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus, dans laquelle : - l’oxyde de zinc en dispersion est présent à raison de 10% à 99% en masse totale de l’association, - l’acétyl hexapeptide-1 est présent à raison de 1 ppm à 50 ppm, de préférence de 1 ppm à 10 ppm en masse totale de l’association, en particulier 5 ppm, et
- le cannabidiol ou le cannabigérol est présent à raison de à 0,1% à 5%, de préférence de 0,25% à 1,5% en pourcentage en masse totale de l’association. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus, dans laquelle : - l’oxyde de zinc en dispersion est présent à raison de 10% à 99% en masse totale de l’association, - l’acétyl hexapeptide-1 est présent à raison de 1 ppm à 50 ppm, de préférence de 1 ppm à 10 ppm en masse totale de l’association, en particulier 5 ppm, et - le cannabidiol est présent à raison de à 0,1% à 5%, de préférence de 0,25% à 1,5% en pourcentage en masse totale de l’association. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus, dans laquelle : - l’oxyde de zinc en dispersion est présent à raison de 10% à 99% en masse totale de l’association, - l’acétyl hexapeptide-1 est présent à raison de 1 ppm à 50 ppm, de préférence de 1 ppm à 10 ppm en masse totale de l’association, en particulier 5 ppm, et - le cannabigérol est présent à raison de à 0,1% à 5%, de préférence de 0,25% à 1,5% en pourcentage en masse totale de l’association. L’expression de « 0,1% à 5% » correspond aux gammes suivantes : de 0,1 à 0,5% : de 0,5 à 1,0% : de 1,0 à 1,5% : de 1,5 à 2,0% : de 2,0 à 2,5% : de 2,5 à 3,0% : de 3,0 à 3,5% : de 3,5 à 4,0% : de 4,0 à 4,5% : de 4,5 à 5,0% : et en particulier environ 0,5%. L’expression de « de 0,25 à 1% » correspond aux gammes suivantes : de 0,25 à 0,50% : de 0,5 à 0,75% : de 0,75 à 1,0% : et en particulier environ 0,50%. L’expression de « de 1 ppm à 50 ppm » correspond aux gammes suivantes : de 1 à 2 ppm : de 2 à 5 ppm : de 5 à 10 ppm : de 10 à 15 ppm : de 15 à 20 ppm : de 20 à 25 ppm : de 25 à 30 ppm : de 30 à 35 ppm : de 35 à 40 ppm : de 40 à 45 ppm : de 45 à 50 ppm : en particulier environ 5 ppm. L’expression de « de 1 ppm à 10 ppm » correspond aux gammes suivantes : de 1 à 2 ppm : de 2 à 3 ppm : de 3 à 4 ppm : de 4 à 5 ppm : de 5 à 6 ppm : de 6 à 7 ppm : de 7 à 8 ppm : de 8 à 9 ppm : de 9 à 10 ppm : en particulier environ 5 ppm.
L’expression de « 10% à 99% » correspond aux gammes suivantes : de 10 à 20% : de 20 à 30% : de 30 à 40% : de 40 à 50% : de 50 à 60% : de 60 à 70% : de 70 à 80% : de 80 à 90% : de 90 à 99%. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus, comprenant en outre du dioxyde de titane en dispersion présent à raison de 7 à 50%, en masse, de préférence de 10 à 49%. L’expression de « 7 à 50% » correspond aux gammes suivantes : de 7 à 15% : de 15 à 20% : de 20 à 30% : de 30 à 40% : de 40 à 50%. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus dans laquelle : - le solvant de l’acétyl hexapeptide-1, en particulier le palmitate d’isopropyle, est présent à raison de 0,15% à 4% en masse totale de l’association, - l’émulsifiant de l’acétyl hexapeptide-1, en particulier la lécithine, est présent à raison de 0,032% à 0,80% en masse totale de l’association, - l’eau est présente à raison de 0,008% à 0,20%, en masse total de l’association. Dans un mode de réalisation particulier, l’invention concerne une association telle que définie ci-dessus, comprenant en outre : - du dioxyde de titane en dispersion dans un solvant approprié, notamment le triglycéride caprylique caprique, présent à raison de de 7% à 50%, en masse totale de l’association, - un premier tensio-actif, en particulier le polyglyceryl-2 dipolyhydroxystearate, présent à raison de 1,5% à 5% notamment 2% à 4%, en masse totale de l’association - un deuxième tensio-actif, en particulier le polyglyceryl-3 diisostearate, présent à raison de 1,5% à 5% notamment 2% à 4%, en masse totale de l’association, - éventuellement un agent d’enrobage du dioxyde de titane tel que l’alumine, l’hydroxyde d’aluminium, les esters de jojoba ou l’acide stéarique, présent à raison de 0,5% à 1,5%, en masse totale de l’association, - éventuellement un support de l’agent d’enrobage, en particulier en particulier l’acide stéarique ou l’acide polyhydroxystéarique en dispersion dans au moins un tensio-actif, en particulier choisi parmi le polyglycéryl-2 Dipolyhydroxystearate et le polyglycéryl-3 diisostearate, présent à raison de 0,5% à 1,5%, en masse totale de l’association,
Un autre objet de la présente invention concerne une composition cosmétique comprenant l’association telle que définie ci-dessus qui comprend ou est constituée en un mélange d’oxyde de zinc, d’acétyl hexapeptide-1 et de cannabidiol ou de cannabigérol, dans laquelle ladite association est présente à raison de 10% à 60% en masse, de préférence 15% à 25% en masse, en particulier 20% en masse dans un milieu cosmétiquement acceptable. Par « composition cosmétique » on entend toute composition à visée cosmétique, notamment une composition pouvant être mise en contact avec les parties superficielles du corps humain, la peau, en particulier l'épiderme, les muqueuses et le cuir chevelu. Au sens de la présente invention, on entend par « composition cosmétique » une composition non pharmaceutique, c'est-à-dire destinée à une peau qui ne nécessite pas de traitement thérapeutique, c'est-à-dire destinée à toute zone de peau saine. On entend par « peau saine », une zone de peau sur laquelle est appliquée l’association ou la composition selon l’invention dite « non pathologique » par un dermatologue, c’est-à-dire ne présentant pas d'infection, de maladie, ou de plaies ou de blessures et/ou autres dermatoses. Dans un mode de réalisation particulier, l’invention concerne une composition telle que définie ci-dessus comprenant l’association telle que définie ci-dessus qui comprend ou est constituée en un mélange d’oxyde de zinc, d’acétyl hexapeptide-1, d’un phyto-cannabinoïde non psychotrope et de dioxyde de titane, dans laquelle ladite association est présente à raison de 10% à 60% en masse, de préférence 18% à 28% en masse, en particulier 25% dans un milieu cosmétiquement acceptable. Par « un milieu cosmétiquement acceptable », on entend au sens de l'invention un milieu compatible avec une utilisation en cosmétique. Dans un mode de réalisation particulier, l’invention concerne une composition telle que définie ci-dessus, ladite composition comprenant au moins un autre adjuvant ou excipient cosmétique, notamment choisi parmi : les corps gras, les solvants organiques, les épaississants ioniques ou non ioniques, les adoucissants, les antioxydants, les conservateurs, les émulsifiants, les gélifiants hydrophiles ou lipophiles, les opacifiants, les stabilisants, les émollients, les α- hydroxyacides, les agents anti-mousse, les agents hydratants, les vitamines, les parfums, les conservateurs, les tensioactifs, les charges, les séquestrants, les polymères, les propulseurs, les agents alcalinisants ou acidifiants, et les colorants. La composition peut contenir tout autre ingrédient habituellement utilisé en cosmétique, en particulier pour la fabrication de compositions destinées à l’exposition au soleil sous forme d'émulsions.
Les corps gras peuvent être constitués par une huile ou une cire ou leurs mélanges, et ils comprennent également les acides gras, les alcools gras et les esters d'acides gras. Les esters d'acides gras peuvent être d’origine végétale (coco, palme), ou d’origine synthétique. Les huiles peuvent être choisis parmi les huiles végétales, minérales et de synthèse, et notamment parmi l'huile de vaseline, les polybutènes et les isobutènes, les isoparaffines et les poly- ^-oléfines. De même, les cires peuvent être choisis parmi les cires fossiles, végétales, minérales et de synthèses connues en soi, et la cire d’abeille. Les épaississants peuvent être choisis notamment parmi les acides polyacryliques réticulés, et les gommes de guar et celluloses modifiées ou non telles que la gomme de guar hydroxy propylée, la méthylhydroxyéthylcellulose et l'hydroxy-propyl-méthylcellulose. Comme « antioxydants », on peut citer, par exemple le tocophérol (vitamine E) ou l’acide ascorbique (vitamine C). Comme « conservateurs », on peut citer, par exemple, le chlorure de benzalkonium, le phénoxyéthanol, ou l’acide sorbique. Comme « émulsifiants », on peut citer, par exemple, les esters d’acide gras de polyol, par exemple le stéarate de glycérol, le stéarate de PEG-40, le tristéarate de sorbitane, les stéarates de polyoxyéthylène sorbitane (Tween®-60 ou le Tween®-20), le cétéareth- 20 (éthoxylé), l’alcool cétylique. Comme « gélifiant hydrophile », on peut citer, par exemple, les polymères carboxyvinyliques, les copolymères acryliques, les polysaccharides, les gommes naturelles, telle que la gomme xanthane, les argiles, les polyacrylamides. Comme « gélifiant lipophile » on peut citer, la silice hydrophobe, les argiles modifiées avec chaînes grasses. Lesdits adjuvants ou excipient peuvent être présents dans la composition dans des quantités classiquement utilisées en cosmétique, notamment de 0,01 à 20% en pourcentage en masse par rapport à la masse totale de la composition. Dans un mode de réalisation particulier, l’invention concerne une composition telle que définie ci-dessus, ladite composition cosmétique étant formulée pour une application topique, en particulier une application topique de la peau, ladite composition étant notamment sous la forme d’un aérosol, d’une émulsion, d’une crème, d’un gel, d’une dispersion, d’un sérum, d’une mousse, d’un lait corporel ou d’un baume anhydre, de préférence sous forme d’un lait corporel ou d’une crème.
Un autre objet de la présente invention concerne l’utilisation d’une association de l’invention telle que définie ci-dessus ou d’une composition cosmétique selon l’invention telle que définie ci-dessus comme agent protecteur du rayonnement solaire (produit solaire), en particulier comme lait solaire. Un autre objet de la présente invention est l’utilisation d’une association selon l’invention telle que définie ci-dessus, ou d’une composition cosmétique selon l’invention telle que définie ci- dessus, dans le traitement cosmétique des peaux saines, notamment sensibles et/ou réactives. On entend par « peau sensible et/ou réactive » toute peau sujette à une sensation d’inconfort pouvant se manifester par des rougeurs plus ou moins diffuses et localisées, des démangeaisons, des tiraillements, des irritations, des sensations de brulures. Selon un autre mode de réalisation particulier la présente invention concerne l’utilisation cosmétique d’une association selon l’invention, ou d’une composition cosmétique selon l’invention telle que définie ci-dessus, dans le traitement cosmétique des peaux sensibles et/ou réactives. Au sens de la présente invention, on entend par « traitement cosmétique » un traitement non thérapeutique, c'est-à-dire destiné à toute zone de peau saine. Un autre objet de la présente invention est une méthode de traitement cosmétique des peaux saines, notamment des peaux sensibles, comprenant l’application topique sur une peau saine d’une association selon l’invention telle que définie ci-dessus, ou d’une composition cosmétique selon l’invention telle que définie ci-dessus pour réduire les sensations de picotements, de fourmillements, des démangeaisons ou prurits, de brûlure, d’échauffements, d’inconfort ou de tiraillement de la peau. Au sens de la présente invention, on entend par « méthode de traitement cosmétique » une méthode qui ne nécessite pas de traitement thérapeutique, c'est-à-dire une méthode de traitement destinée à toute zone de peau saine. Selon un autre mode de réalisation particulier la présente invention concerne une méthode de traitement cosmétique, en particulier de protection solaire, des peaux saines, notamment sensibles, comprenant une application de 1 à 5 fois par jour, notamment une application toutes les deux heures sur une peau saine. Selon un autre mode de réalisation particulier la présente invention concerne une méthode de traitement cosmétique, notamment de protection solaire, des érythèmes et des inflammations
de la peau dus à une exposition au soleil, comprenant l’application sur la peau d’une association selon l’invention, ou d’une composition cosmétique selon l’invention. Un autre objet de la présente invention concerne une composition dermatologique, comprenant comme substance active, une association selon l’invention telle que définie ci- dessus, avec un excipient pharmaceutiquement acceptable, ladite composition étant notamment formulée pour une application topique, en particulier une application topique de la peau, ladite composition étant notamment sous la forme d’un aérosol, d’une émulsion, d’une crème, d’un gel, d’une dispersion, d’un sérum, d’une mousse, d’un lait corporel ou d’un baume anhydre. Par « composition dermatologique » on entend toute composition à visée pharmaceutique pouvant être mise en contact avec les parties superficielles du corps humain, la peau, en particulier l'épiderme. Dans un mode de réalisation particulier, l’invention concerne une composition dermatologique selon l’invention telle que définie ci-dessus, comprenant en outre une ou plusieurs substances actives choisis parmi les agents qui luttent contre la glycation, les agents stimulant la synthèse de collagène ou d’élastine ou prévenant leur dégradation, les agents stimulant la synthèse de glycosaminoglycanes ou de protéoglycanes ou prévenant leur dégradation, les agents anti- radicalaires ou anti-pollution, les agents drainants ou détoxifiants, les agents desquamant, les agents apaisants et/ou anti-irritants, les agents astringents, les agents agissant sur la microcirculation, et leurs mélanges. La liste de substances actives ci-dessus est donnée de façon non limitative. Les compositions selon l’invention peuvent en outre comprendre un ou plusieurs autres substances actives additionnelles, l’homme du métier veillant toutefois à ce que les éventuels composés complémentaires actifs, ainsi que leurs proportions, soient choisis de telle manière à ce que les propriétés avantageuses reconnues aux compositions selon l’invention ne soient altérées. Dans un mode de réalisation particulier, l’invention concerne une composition dermatologique selon l’invention telle que définie ci-dessus, pour son utilisation pour la photoprotection contre le rayonnement solaire. Un autre objet de la présente invention concerne un procédé de préparation d’une composition comprenant l’association d’un mélange d’oxyde de zinc, d’acétyl hexapeptide-1 et de cannabidiol ou de cannabigérol comprenant les étapes suivantes :
- une première étape de préparation de la phase aqueuse A, ladite phase A comprenant de l’eau, du NaCl ou du MgSO4, et du propanediol, comprenant la dissolution des éléments de la phase A portée en température, en particulier de 70 à 80°C, - une deuxième étape d’introduction des éléments de la phase B, ladite phase B comprenant le cannabidiol, l’acétyl hexapeptide-1 et l’oxyde de zinc, éventuellement du TiO2, comprenant : ^ l’introduction du cannabidiol, de l’acétyl hexapeptide-1 et des autres éléments de la phase B sous agitation défloculeuse, de préférence de 800 à 1800 tr/min, en particulier pendant 10 min, de préférence de 70 à 80°C, dans la phase aqueuse A, pour former une solution limpide, ^ puis l’introduction du ZnO éventuellement avec TiO2 sous agitation défloculeuse, de préférence de 800 à 1800 tr/min, en particulier pendant 10 min, à une température de 70 à 80°C, dans la phase aqueuse A, ^ puis l’aspiration de la phase aqueuse, en particulier à 25 mL/min, sous agitation défloculeuse de 800 à 1800 tr/min, donnant une solution restante sous forme d’une émulsion huileuse, ^ le maintien de l’agitation pendant 10 min à température de 70-80°C et puis le maintien de l’agitation pendant la phase de refroidissement de la solution restante, - éventuellement une étape d’introduction de la phase C, ladite phase C comprenant des parfums ou des conservateur, à une température d’environ de 40°C lors de l’étape de refroidissement. Des modes de réaslisation particulier de formulations selon l’invention sont donnés à titre non limitatif. Les Inventeurs ont mis au point une formulation avec les proportions indiquées dans le Tableau 1. Ladite formulation comprend un mélange de Xperse® 501 comprenant l’oxyde de zinc, de MélinoilTM comprenant l’acétyl hexapeptide-1 et de cannabidiol. La formulation du Tableau 1 est utilisable comme composition de crème solaire SPF30.
Tableau 1. Formulation d’une émulsion comme crème solaire SPF30 Une autre formulation mise au point par les Inventeurs est celle avec les proportions indiquées dans le Tableau 2. Ladite formulation comprend un mélange de Xperse® 501 comprenant l’oxyde de zinc, de MélinoilTM comprenant l’acétyl hexapeptide-1, de cannabidiol et de GranLux®TGL-50 comprenant le dioxyde de titane. La formulation du Tableau 2 est utilisable notamment comme composition de crème solaire SPF50.
Tableau 2. Formulation d’une émulsion comme crème solaire SPF50 Les exemples et figures suivants illustrent l’invention, sans en limiter la portée. LISTE DES FIGURES
La Figure 1 représente le spectre d’absorption UV d’une crème solaire SPF30 selon l’invention comprenant du ZnO, du MélinoilTM et du CBD. La Figure 2 représente le spectre d’absorption UV d’une crème solaire SPF50 selon l’invention comprenant du ZnO, du TiO2, du MélinoilTM et du CBD. EXEMPLES Exemple 1 – Composition d’une crème solaire SPF30
Tableau 3. Composition d’un lait solaire SPF30 Exemple 2 – Préparation d’une crème solaire SPF30 La crème de protection solaire de l’exemple 1 a été préparée suivant le protocole décrit ci- dessous. Dans un bécher, les ingrédients de la solution de la phase A comprenant l’eau, le chlorure de NaCl et le propanediol ont été pesés à part et mélangés formant une solution. La solution a été agitée afin de dissolution le sel NaCl à une température de 72 à 75°C.
Les ingrédients de la phase B ont été pesés et ont été introduits dans le bécher à la solution de la phase A, excepté l’ingrédient comprenant le ZnO (Xperse®501) et le Lauroy lysine (Amihope®LL), sous une agitation défloculeuse, de 1000 à 1800tr/min pendant 10 min à une température de 75 à 80°C Le ZnO a été ensuite ajouté sous vive agitation défloculeuse, de 1000 à 1800tr/min, au moins 10 minutes Le Lauroyl lysine a été ajouté sous vive agitation défloculeuse, de 1000 à 1800tr/min, pendant au moins 5 minutes La phase aqueuse de la solution dans le bécher a été aspirée lentement lorsque la solution était sous vive agitation de 1000tr/min à 1800 tr/min. La solution restante a été refroidie. Les ingrédients de la phase C (parfum et conservateur) ont été ajoutés un par un et mélangés 5 minutes entre chaque ajout. Une émulsion sous forme de crème onctueuse, homogène et stable a été obtenue. Un test de stabilité de l’émulsion a été effectué 24 heures après la préparation de l’émulsion. La crème a subi un test de centrifugation pendant 10 minutes à 3000 tour/min (1600-1800 G) et a conservé son aspect d’une émulsion homogène et stable. Exemple 3 : Composition d’une crème solaire SPF50
Tableau 4. Composition d’un lait solaire SPF50
d’une crème solaire SPF50 L’émulsion de l’exemple 3 a été préparée à chaud selon le protocole décrit ci-dessous. Dans un bécher, les ingrédients de la solution de la phase A comprenant l’eau, le chlorure de sodium NaCl et le propanediol, ont été pesés à part et mélangés. La solution a été agitée afin de dissolution le sel NaCl à une température de 70 à 75°C. Les ingrédients de la phase B ont été pesés et ont été introduits dans le bécher à la solution de la phase A, excepté l’ingrédient comprenant le ZnO (Xperse®501) et celui comprenant le TiO2 (GrandLux®, sous une agitation défloculeuse de 1000 à 1800tr/min pendant 10 min à une température de 75 à 80°C, formant une solution limpide. Les ingrédients comprenant le ZnO et le TiO2 ont été ensuite ajoutés sous vive agitation défloculeuse, pendant au moins 10 minutes, en maintenant la température de 75 à 80°C. La phase aqueuse de la solution dans le bécher a été aspirée lentement lorsque la solution était sous vive agitation de 800tr/min à 1800 tr/min, pendant 10 minutes en maintenant la température. La solution restante a été refroidie tout en maintenant l’agitation défloculeuse, de 800tr/min à 1800 tr/min. Les ingrédients de la phase C ont été ajoutés un par un à une température d’environ 40°C. Une émulsion sous forme de crème onctueuse, homogène et stable a été obtenue. Un test de stabilité de l’émulsion a été effectué 24 heures après la préparation de l’émulsion. La crème a subi un test de centrifugation pendant 15 minutes entre 1500-2000 G et a conservé son aspect d’une émulsion homogène et stable.
solaire Principe
Le niveau de protection d’un produit cosmétique contenant des filtres solaires peut être évalué par une méthode spectrophotométrique in vitro. La méthode permet de renseigner : - le coefficient de protection « SPF », - le facteur de protection UVA « PF-UVA », et - la Longueur d’Onde Critique « LOC », qui ne doit pas être inférieure à 370 nm, pour que les produits formulés puissent revendiquer une conformité de leur valeur de protection UVA, par un logo UVA. Pour déterminer l’efficacité des produits solaires, on évalue leur capacité à prévenir l’érythème qui apparaît à la surface de la peau si celle-ci est exposée un certain temps à une source d’énergie UV. Les UVB représentent seulement environ 5 % de l’énergie totale des UV reçus (UVA + UVB), mais compte tenu de leur énergie, ils ont une action prépondérante sur l’apparition de cet érythème. Les UVA quant à eux, interviennent à hauteur d’environ 16% dans l’apparition du coup de soleil. La méthode utilisée consiste à mesurer le flux d’énergie UV traversant la crème, exprimé en transmission énergétique et à comparer ce flux au flux initial selon le principe de toute méthode spectrophotométrique : F( ^) = I / I0 Où : - ^ est la longueur d’onde ; - I est le flux énergétique UV ; - I0 est le flux énergétique initial. Toutefois, la comparaison de ces deux courbes n’est pas suffisante à exprimer le niveau de protection du produit étalé sur la peau. En effet, deux autres fonctions d’onde interviennent : ^ La fonction d’onde de la source : Dans la pratique, il s’agit du soleil dont le spectre a été défini par la commission internationale de l’éclairage comme une fonction d’onde S( ^). ^ La fonction d’onde concernant la peau : Les réactions cutanées ou subcutanées dépendent de l’énergie de la lumière d’excitation et sont exprimées sous forme d’une fonction d’onde E( ^). En intégrant chacune de ces 3 courbes sur tout le domaine UVB et UVA et en faisant le produit des 3 intégrales, on obtiendra l’expression du SPF In Vitro. Cette méthode a été initialement décrite par B. Diffey et J. Robson (JSCC 40.127-133 - 1989). Elle est aujourd’hui largement utilisée et reconnue par les instances internationales.
Matériels et méthode Matériels de laboratoire - Un spectrophotomètre UV, Kontron 933 (BIO-TEK Kontron instruments) équipé d’une source UV et d’un monochromateur ainsi que d’une sphère d’intégration capable de délivrer un flux d’énergie UV entre 290 et 400 nm. L’incrément de la longueur d’onde est de 1nm. - Un simulateur solaire, Suntest CPS+ (Atlas) permettant de reproduire la lumière du soleil et de prendre en compte la photodégradation éventuelle de l’échantillon testé. L’échantillon est étalé sur des plaques de polyméthacrylate de méthyle (PMMA) Sunplate (Helioscience), de dimension 5 x 5 cm, ayant une phase rugueuse obtenue par sablage. Le produit testé est étalé suivant la quantité préconisée par les normes soit 1,3 mg/cm2 pour le PMMA. Il peut être soit étalé par pulvérisation du produit sur les plaques, soit par application sur la phase rugueuse de la plaque à l’aide d’un doigt nu pré-saturé en produit de façon normée et contrôlée dans le but d’obtenir un film homogène. L’échantillon est exposé à 2 doses érythémales minimales « MED ». La valeur MED a été choisie à 550 W/m2, cette valeur correspondant à une exposition à un soleil zénithal. Avec cette lumière solaire standard, tout en recevant 2 MED, le produit recevra donc : 400 J/m2. L’appareil de mesure est calibré au préalable avec des plaques PMMA. Les essais sont réalisés sur 3 plaques de PMMA sur lesquelles le produit est déposé. 4 mesures par plaques ont été effectué avec le spectromètre. Détermination de la valeur SPF Le SPF in vitro s’exprime à partir de l’ensemble du spectre résiduel UVB et UVA ayant traversé la couche de crème étalée sur la plaque. Toutefois, cette fonction d’onde T( ^) doit être multipliée par : - Une première fonction d’onde qui exprime la caractéristique spectrale du soleil S( ^). - Une seconde fonction d’onde qui exprime la réactivité de la peau en fonction de la longueur d’onde (et donc de l’énergie dissipée) : la fonction érythémateuse E( ^).
Avec : - E( ^) est le spectre d’action de l’érythème - S( ^) est le spectre solaire standard - T( ^) est la transmission moyenne de la couche du produit d’essai étalé sur un support approprié - d( ^) est l’intervalle de longueur d’onde (1 nm) Détermination de la valeur PF-UVA La protection UVA in vitro s’exprime à partir de l’ensemble du spectre résiduel UVA ayant traversé la même couche de crème.
Avec : - P( ^) est le spectre d’action de la PPD - L( ^) est le spectre de la lampe à arc Xénon - T( ^) est la transmission moyenne de la couche du produit d’essai étalé sur un support approprié - d( ^) est l’intervalle de longueur d’onde (1 nm) Détermination de la valeur LOC Dans le calcul, λc correspond à la longueur d’onde pour laquelle l’aire sous la courbe d’absorption atteint 90% de l’aire totale de 290 nm à 400 nm. La longueur d’onde critique sera donc déterminée selon la formule :
Avec :
- λc correspond à la longueur d’onde critique - A(λ) correspond à l’absorption - d(λ) correspond à l’intervalle de longueur d’onde entre les mesures La longueur d’onde critique λc du produit testé est obtenue en calculant la moyenne arithmétique des différentes mesures : toutes les mesures sélectionnées sont prises en compte pour le calcul de la dispersion statistique. Expression statistique des résultats L'indice de protection moyen de la préparation étudiée est obtenu par le calcul de la moyenne arithmétique des indices de protection de chaque essai. Les calculs sont obtenus à l’aide d’un logiciel spécifique qui permet d’accéder immédiatement et sans aucune manipulation à tous les calculs nécessaires pour l’obtention des valeurs. Exemple 6 – Tests de protection d’une crème SPF30 La protection solaire de la crème solaire SPF 30 de l’invention selon l’exemple 1 a été analysée selon la méthode présentée dans l’exemple 5 avec un étalement de la crème solaire sur les plaques par pulvérisation. Les résultats sont reportés dans le tableau 5.
Tableau 5 : Analyse de protection d’une crème SPF 30 Comme indiqué dans le spectre UV de la figure 1, le lait solaire SPF30 de l’invention selon la composition décrite dans l’exemple 1, possède une protection bien équilibrée, entre les UVB et les UVA. Exemple 7 – Tests de protection SPF50 La protection solaire de la crème solaire SPF 50 de l’invention selon l’exemple 3 a été analysée selon la méthode présentée dans l’exemple 5 avec un étalement de la crème solaire sur les plaques par pulvérisation. Les résultats sont reportés dans le tableau 6.
Tableau 6 : Analyse de protection d’une crème SPF 50 Comme indiqué dans le spectre UV de la figure 2, le lait solaire SPF50 de l’invention selon la composition décrite dans l’exemple 3, possède une protection bien équilibrée, entre les UVB et les UVA. Example 8 – Tests comparatifs Afin de d’évaluer l’influence de l’association de l’oxyde de zinc, de l’acétyl hexapeptide-1 et d’un cannabinoïde non psychotrope tel que cannabidiol, quatre compositions de crème solaire se distinguant par la présence de ces différents composants ont été préparées : - La crème 1, appelée aussi « base 30 », est une crème d’indice de protection solaire SPF30 comprenant du dioxyde de zinc; sa composition est reportée dans le tableau 7 ci-dessus ; - La crème 2, appelée « base 30 + MélinoilTM », correspond à la crème de « base 30 » ci-dessus comprenant additionnellement du MélinoilTM, soit de l’acétyl hexapeptide-1; sa composition est reportée dans le tableau 8 - La crème 3, appelée « base 30 + CBD », correspond à la crème de « base 30 » ci- dessus comprenant additionnellement du canabidiol (CBD), de composition selon le tableau 9 - La crème 4, appelée « base 30 + MélinoilTM + CBD » correspond à la crème de « base 30 » comprenant additionnellement du MélinoilTM et du cannabidiol (CBD), de composition selon le tableau 10. Afin de pouvoir réaliser une comparaison de l’influence des différents constituants de l’association de l’oxyde de zinc, de l’acétyl hexapeptide-1 et du cannabidiol, les quatre crèmes testées ont été préparées dans un intervalle de 24 heures avec le même opérateur, le même appareillage et notamment les mêmes numéros de lots des ingrédients cosmétiques. Ainsi les fluctuations pouvant provenir de conditions expérimentales extérieures telles que la variabilité de la composition des lots des ingrédients cosmétiques, en particulier la teneur en ZnO dans
l’ingrédient cosmétique correspondant, sont minimisées. A noter que le numéro de lot de l’ingrédient cosmétique contenant ZnO utilisé pour préparer les quatre crèmes est différent de celui de l’exemple 1.
Tableau 7 : Composition de la crème 1 de « base 30 » d’indice SPF30 comprenant ZnO
Tableau 8 : Composition de la crème 2 « base 30 + MélinoilTM »
Tableau 10 : Composition de la crème 4 « base 30 + MélinoilTM + CBD » La protection solaire des quatre compositions de crème solaire ( crème 1 « base 30 », crème 2 « base 30 + MélinoilTM », crème 3 « base 30 + CBD » et crème 4 « base 30 + MélinoilTM+CBD) présentées respectivement dans les tableaux 7 à 10 ont été analysée selon la méthode présentée dans l’exemple 5 avec un étalement des crèmes sur les plaques par une application manuelle normée à l’aide d’un doigt nu pré-saturé en crème. Les résultats sur l’indice de protection solaire SPF, sur la valeur UVA et la longueur d’onde LOC sont reportés dans le tableau 11.
Tableau 11 : Protection solaire de différentes crèmes comprenant différents composants de l’association oxyde de zinc, acétyl hexapeptide-1 et cannabidiol
Les résultats du tableau 11 relatifs aux analyses de la protection solaire des quatre crèmes comprenant chacune différents composants de l’association : oxyde de zinc, acétyl hexapeptide-1 et cannabidiol, démontrent que dans une crème solaire de base d’indice SPF30 contenant de l’oxyde de zinc (ZnO), le MélinoilTM, en conséquence l’acétyl hexapeptide-1, potentialise l’activité du cannabidiol (CBD) vis-a-vis de l’indice de protection solaire SPF et la valeur UVA, en augmentant ces valeurs. En effet, lorsque du MélinoilTM, à savoir de l’acétyl hexapeptide-1, est ajouté à la crème de base 30 d’indice SPF30 comprenant du ZnO, on constate un effet négligeable sur la valeur d’indice de protection solaire SPF, cette valeur étant de 31,6 pour la crème 1 de « base 30 » et de 32,8 pour la crème 2 de « base 30 + MélinoilTM », soit une augmentation de 3,8% . Au contraire, l’addition du cannabidiol (CBD) présente un effet sur l’indice de protection solaire, son introduction permet une augmentation de la protection d’environ 18,7% avec une valeur SPF de 37,5 pour la crème 3 « base 30 + CBD ». De façon surprenante, ces résultats révèlent aussi que l’association du MélinoilTM et CBD dans une crème contenant de l’oxyde de zinc (crème 4 « base 30 + MélinoilTM +CBD ») montre un effet puisque cette association permet d’augmenter la valeur de l’indice SPF à une valeur de 44,6, soit d’augmenter de 41,1%l’indice de protection SPF par rapport à la composition de la base 30. Il est à noter que l’augmentation de la protection solaire est plus élevée que la simple addition des effets du MélinoilTM (augmentation de 3,8%) et de celui du CBD (augmentation de 18,7%) sur la valeur de l’indice SPF. On constate que l’association du Mélinoil et du CBD permet une augmentation de 41,1 %, soit plus de deux fois supérieure à celle de la simple addition du CBD. Un effet synergique est aussi observé sur la valeur UVA moyen, bien que le MélinoilTM diminue la valeur UVA de -10,5% quand il est associé seul à une base 30 de crème solaire d’indice SPF30 contenant de l’oxyde de zinc, il le potentialise et l’augmente lorsqu’il est associé au CBD. En effet une augmentation de 2,8 points de l’indice UVA (soit de 15,5%) est constaté lorsque du CBD est ajouté alors qu’une augmentation de 4,5 points (soit 24,9%) sur l’indice UVA est obtenu lorsqu’on additionne à la fois du MélinoilTM et du CBD. Il n’a pas été observé d’impact de l’addition du MélinoilTM, soit de l’actétyl hexapeptide-1, et du cannabidiol sur la valeur LOC, les valeurs LOC étant identiques pour les quatre crèmes solaires étudiées.
DESCRIPTION TITLE: NEW COMPOSITIONS COMBINING AT LEAST ONE INORGANIC SUNSCREEN AND THEIR USE FIELD OF THE INVENTION The present invention relates to new compositions combining at least one inorganic sunscreen and their use in cosmetics, as well as their pharmaceutical use, particularly in dermatology, especially as sun protection for the skin. STATE OF PRIOR ART Exposure to solar radiation has beneficial effects, but during overexposure it can also lead to deleterious consequences on the skin both in the short and long term, such as solar erythema known as “sunburn”. sun”, accelerated aging of tissues, photodermatoses, even carcinomas or melanomas. One of the main factors damaging the skin is considered to be ultraviolet solar radiation UV-A (λ = 320-400 nm) and UV-B (λ = 290-320 nm). UV-B radiation reaching the surface of the skin can cause, alongside tanning, burns and signs of aging. UV-A rays can penetrate deeper into the skin, causing the release of free radicals, leading to changes in DNA. UV rays therefore have a pro-oxidant effect. “Sunburn” or erythema induced by solar irradiation, or actinic erythema, clinically corresponds to histological characteristics marked by the presence of dyskeratotic cells or “sunburn cells”, corresponding to apoptotic keratinocytes. Actinic erythema is mainly linked to UV-B but also to the action of UVA. The consequences of UV-induced erythema are multiple, involving DNA damage, generation of reactive oxygen species (ROS), and an array of inflammatory mediators. Natural photoprotection can be induced by the skin which has intrinsic defense systems allowing it to fight against the sun's aggressions. It is expressed by the production of photoprotective melanin pigments, or by a thickening of the stratum corneum with a greater number of layers of keratinocytes in the epidermis. For prolonged or intensive exposure to solar radiation, photoprotection can also be induced and ensured by means such as the topical application of photoprotective cosmetic products such as sun creams. These products or preparations most often contain, solubilized or dispersed in an excipient, protective substances which can be classified into three main categories: - physical filters, whose action aims to reflect all solar radiation and therefore to prevent their penetration in the skin: - chemical filters, whose action aims to absorb part of the solar radiation, generally UV-A and UV-B radiation then to release the photonic energy absorbed by thermal exchange with the skin: - and finally so-called active photoprotective agents as opposed to filters, and which are generally substances capable of trapping reactive oxygen species ("ERO" or "ROS") formed when radiation is absorbed by molecules naturally present in the skin (photosensitization mechanism). More recently, other protection strategies have been developed with the introduction into sunscreen formulas of active agents such as DNA repair enzymes, peptides protecting DNA from UVA damage and antioxidant compounds. such as vitamins C and E, or polyphenols (Matsui MS et al., J. Invest. Dermatol., 2009, vol.14, pp.56-59). Interest in this strategy has been reinforced by the recent demonstration of the capacity of visible (400-700 nm) and near infrared (700-1440 nm) radiation to also induce the formation of ROS in the skin (Liebel F. et al., J. Invest. Dermatol., 2012, vol. 132, pp.1901-1907: Schroeder P. et al., Exp. Gerontol., 2008, vol.43, pp.629-632). Such topical preparations are generally characterized by a sun protection factor "SPF" (Sun Protection Factor), indicator of the level of protection against solar erythema, adapted to particular sunlight conditions and skin phototypes. For high SPF sunscreen formulas, protective substances such as physical filters, chemical filters and photoprotective active agents are often combined. However, the combination of such heterogeneous active ingredients in topical formulas is not without problems: lack of stability, cost, biodegradability, formation in contact with oxygen, or its reactive species, of by-products including toxicology is often unknown. High-performance chemical filters have been developed, presenting increased photostability and broad absorption spectra with respect to UV-A and/or UV-B. These chemical filters provide good photoprotection but their massive use is increasingly criticized because they often have allergenic properties and can be toxic or harmful if they penetrate through the epidermal barrier. Skin penetration of these soluble filters is a source of concern for their cumulative effects. Thus, several filters are suspected of being endocrine disruptors. In addition, filters are often poorly biodegradable and become environmental pollutants. Among other examples of ecotoxic effects, solar filters would have a negative impact on marine reefs and could contribute to the phenomenon of coral bleaching. The general trend is therefore to limit the use of synthetic chemical filters. Beyond these considerations, the sensory aspect for the user during the topical application of their preparations must also be taken into consideration. The physical filters used in sun protection preparations are most often inert substances of mineral origin such as zinc oxide (ZnO) and titanium dioxide (TiO2), cerium oxide, zirconium. Their use in sun protection products, however, remains difficult, with the appearance of white traces during application. More than sixty phyto-cannabinoids are known, including non-psychotropic cannabinoids such as cannabidiol (CBD), cannabigerol (CBG), cannabinol (CBN), cannabichromene (CBC), cannabivarin (CBDV), cannabicyclol (CBL ) and cannabicitran (CBT). By “phyto-cannabinoids” we mean cannabinoids of plant origin, that is to say from plants. Thus, non-psychotropic phyto-cannabinoids contained in hemp such as cannabidiol and cannabigerol help relieve skin conditions such as inflammation and unexpectedly exhibit an attenuating effect on cell apoptosis induced by UV radiation. . Other active substances such as biomimetic peptides can have a protective effect on the skin against solar radiation. Indeed, biomimetic peptides mimic the action of natural peptides, while being biocompatible. Among these biomimetic peptides, acetyl hexapeptide-1, an alpha-MSH agonist by stimulating melanin synthesis, helps reinforce the skin's natural photoprotection capacity by protecting it from DNA damage initiated by UV and reduces the appearance of solar erythema, soothes skin damaged by the sun and limits the signs of photoaging. TECHNICAL PROBLEM There is a need for topical application compositions to protect the skin against solar radiation and prevent its damage. There is a need for topical compositions with strong sun protection with a texture allowing easy application and optimal coverage of the skin during application. There is a need for topical compositions with strong sun protection which, after application, leave a feeling of hydration and softness and do not leave the sensation of a sticky film applied to the skin and do not leave unpleasant white marks on the skin. There is a need for sun protection compositions limiting the use of chemical sun filters based on natural, biocompatible and non-toxic products, or based on environmentally friendly products. One of the aims of the invention is to propose a combination of active substances making it possible to protect the skin against solar radiation, and in particular to prevent the ravages of prolonged exposure to the sun such as solar erythema. Another aim of the present invention is to propose a combination of active substances making it possible to protect the skin against solar radiation based on natural products, including for example plant extracts, and/or based on biomimetic products, inspired by natural and biocompatible with the skin. Another aim of the present invention is to propose a composition, in particular topical, comprising the association of different heterogeneous active substances, which is stable. Another aim of the invention is to propose a topical composition which allows rapid and homogeneous application to the skin, transparency of the product after application and leaving on the skin a sensation of hydration and softness, without the sensation of a film applied to the skin. A first object of the present invention is an association comprising or constituting a mixture of at least one zinc oxide, acetyl hexapeptide-1 and at least one non-psychotropic phyto-cannabinoid. In a particular embodiment, the invention relates to an association as defined above, comprising or constituting a mixture of zinc oxide, acetyl hexapeptide-1 and a non-psychotropic phyto-cannabinoid. In a particular embodiment, the non-psychotropic phyto-cannabinoid is chosen from the following group: cannabidiol (CBD), cannabigerol (CBG), cannabinol (CBN), cannabichromene (CBC), cannabivarin (CBDV), cannabicyclol (CBL) and cannabicitran (CBT). In a particular embodiment, the invention relates to a combination comprising or constituting a mixture of zinc oxide, acetyl hexapeptide-1 and cannabidiol or cannabigerol. Thus, among the different combinations of active substances for sun protection, the inventors have surprisingly observed that the association of a non-psychotropic phyto-cannabinoid, in particular cannabidiol (CBD) or cannabigerol (CBG), with acetyl hexapeptide-1 which is a stimulant of the natural production of melanin in the skin, and zinc oxide which is an inorganic filter, is found to exhibit synergistic activity for the protection of the skin against solar radiation as indicated in the analyzes of Example 8. The inventors obtained a topical composition comprising the association of cannabidiol, with acetylhexapeptide-1 and zinc oxide having a creamy, stable and homogeneous texture facilitating penetration and coverage of the skin without leaving unsightly white marks. The application of this composition gives a feeling of hydration, freshness and softness and not that of a film applied to the skin. Cannabidiol (CBD) or 2-[(1R,6R)-6-isopropenyl-3-methylcyclohex-2-en-1-yl]-5-pentylbenzene-1,3-diol, is the second most common phyto-cannabinoid abundant in hemp. Cannabidiol can be extracted from several varieties of hemp, including Cannabis sativa, indica and ruderalis. In particular, it can be extracted pure from genetically modified hemp plants or synthesized in the laboratory. Its structure is presented below and it is a lipophilic substance and does not exhibit psychoactive effects. Chemical Structure of Cannabidiol CBD cannabidiol shows potential in reducing the inflammatory response of the skin. Indeed, studies have shown that it has anti-inflammatory properties (Burstein S., Bioorganic & Medicinal Chemistry, Vol 23, 2015, p 1377-1385) and antioxidant properties (Booz GW: Free Radical Biology and Medicine, Vol 51, September 2011, p 1054-1061). Cannabigerol (CBG) is another phyto-cannabinoid, present in low levels, around 1%, in hemp. Its structure is presented below. Chemical structure of cannabigerol (CBG) “Acetyl hexapeptide-1” is a biomimetic peptide mimicking the action of natural peptides which stimulate the synthesis of melanin. Acetyl hexapeptide-1 is a hexapeptide with the sequence “Ac-Nle-Ala-His-(D)Phe-Arg-Trp-NH 2 ”. It is a biomimetic peptide (FR 2835528) of α-MSH. The structure of the molecule, whose CAS number is [448944-47-6], is presented above. Chemical structure of acetyl hexapeptide-1 In a particular embodiment, the invention relates to an association as defined above comprising or constituting a mixture of zinc oxide, acetyl hexapeptide-1 and cannabidiol. In a particular embodiment, the invention relates to a combination as defined above, comprising or constituting a mixture of zinc oxide, acetyl hexapeptide-1 and cannabigerol. In a particular embodiment, the invention relates to a combination as defined above, comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabidiol (CBD) and - of another non-psychotropic phyto-cannabinoid chosen from the group: cannabigerol (CBG), cannabinol (CBN), cannabichromene (CBC), cannabivarin (CBDV), cannabicyclol (CBL) and cannabicitran (CBT). In a particular embodiment, the invention relates to an association as defined above comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabidiol (CBD) and - at least one other non-psychotropic cannabinoid chosen from the group cannabigerol (CBG), cannabinol (CBN), cannabichromene (CBC), cannabivarin (CBDV), cannabicyclol (CBL) and cannabicitran (CBT). In a particular embodiment, the non-psychotropic phyto-cannabinoid is obtained according to the laws in force concerning the supply, use and marketing of such a product. The cannabidiol and cannabigerol used can be of natural origin and come from plant extracts of different varieties of hemp, in particular Cannabis sativa, indica or ruderalis. According to another particular embodiment, the cannabidiol or cannabigerol used comes from hemp extracts containing less than 0.3% THC, in particular less than 0.2% THC. According to another particular embodiment, the cannabidiol or cannabigerol used is synthesized by methods known to those skilled in the art. According to another particular embodiment, the acetyl hexapeptide-1 used is in the form of an oil. Acetyl hexapeptide-1 can be in the form of a hydrophilic solution or as an oily, lipophilic dispersion/emulsion. In oily form, it is marketed for example under the name MelinOil TM (INCI name: Isopropyl Palmitate (and) Lecithin (and) Water (and) Acetyl Hexapeptide-1) by the company Lucas Meyer Cosmetics). MelinOil TM from Lucas Meyer Cosmetics is a dispersion of acetyl hexapeptide-1 in a mixture of lecithin, isopropyl palmitate and water. In aqueous form, acetyl hexapeptide-1 is marketed under the name Melitane TM (INCI name: Glycerin (and) Water (and) Dextran (and) Acetyl Hexapeptide-1). Melitane TM from Lucas Meyer Cosmetics is a solution of acetyl hexapeptide-1 in a mixture of glycerin, Dextran and water. According to another particular embodiment, the zinc oxide used is in particulate form in a dispersant. According to another particular embodiment, the zinc oxide dispersant used is chosen from: caprylic capric triglyceride, dicaprylyl carbonate, C12-15 alkyl benzoate and diisobutyl adipate. A ZnO dispersion used is for example marketed under the name Xperse® 501 (INCI name: Zinc oxide (and) Caprylic/capric triglyceride (and) polyhydroxystearic acid) from the company Evercare. In a particular embodiment, the invention relates to an association as defined above further comprising titanium dioxide (TiO2). In a particular embodiment, the invention relates to an association as defined above, comprising or constituting a mixture of zinc oxide, titanium dioxide, acetyl hexapeptide-1 and a non-psychotropic cannabinoid . In a particular embodiment, the non-psychotropic cannabinoid is chosen from the following group: cannabidiol (CBD), cannabigerol (CBG), cannabinol (CBN), cannabichromene (CBC), cannabivarin (CBDV), cannabicyclol ( CBL) and cannabicitran (CBT). In a particular embodiment, the invention relates to a combination as defined above, comprising or constituting a mixture of zinc oxide, titanium dioxide, acetyl hexapeptide-1 and cannabidiol or cannabigerol. In a particular embodiment, the invention relates to a combination as defined above, comprising or constituting a mixture of zinc oxide, titanium dioxide, acetyl hexapeptide-1 and cannabidiol. In a particular embodiment, the invention relates to a combination as defined above, comprising or constituting a mixture of zinc oxide, titanium dioxide, acetyl hexapeptide-1 and cannabigerol. In a particular embodiment, the invention relates to a combination as defined above further comprising: - a solvent for acetyl hexapeptide-1, - an emulsifier for acetyl hexapeptide-1, - a dispersant for acetyl hexapeptide-1, zinc oxide, - and water. In a particular embodiment, the solvent for acetyl hexapeptide-1 is chosen from: isopropyl palmitate, glycerin, caprylic capric triglyceride, dicaprylyl carbonate and propanediol. In a particular embodiment, the acetyl hexapeptide-1 emulsifier is chosen from: lecithin, sorbitan esters, alkyl polyglucosides and polyoxyethylene derivatives. In a particular embodiment, the zinc oxide dispersant is chosen from: caprylic capric triglyceride, dicaprylyl carbonate, C12-15 alkyl benzoate and diisobutyl adipate. In a particular embodiment, the invention relates to a combination as defined above further comprising: - a solvent for acetyl hexapeptide-1, in particular isopropyl palmitate, - an emulsifier for acetyl hexapeptide- 1 in particular lecithin, - a dispersant of zinc oxide, in particular caprylic capric triglyceride - and water. In a particular embodiment, the invention relates to an association comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabidiol or cannabigerol, - a solvent of acetyl hexapeptide-1, - an emulsifier of acetyl hexapeptide-1, - a dispersant of zinc oxide, - and water. In a particular embodiment, the invention relates to an association comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabidiol, - a solvent for acetyl hexapeptide- 1, - an emulsifier of acetyl hexapeptide-1, - a dispersant of zinc oxide, - and water. In a particular embodiment, the invention relates to an association comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabigerol, - a solvent for acetyl hexapeptide- 1, - an emulsifier of acetyl hexapeptide-1, - a dispersant of zinc oxide, - and water. In a particular embodiment, the invention relates to an association as defined above further comprising: - titanium dioxide, - optionally a coating agent for titanium dioxide such as alumina, titanium hydroxide aluminum, jojoba esters or stearic acid, - possibly a support for the coating agent. In a particular embodiment, the invention relates to a combination as defined above further comprising: - titanium dioxide, - a titanium dioxide coating agent such as alumina, titanium hydroxide aluminum, jojoba esters or stearic acid, - a coating agent carrier. In a particular embodiment, the invention relates to an association as defined above further comprising: - titanium dioxide, - optionally a coating agent for titanium dioxide such as alumina, titanium hydroxide aluminum, jojoba esters or stearic acid, - optionally a support for the coating agent, in particular stearic acid or polyhydroxystearic acid dispersed in at least one surfactant, in particular chosen from polyglyceryl-2 dipolyhydroxystearate and polyglyceryl-3 diisostearate. In a particular embodiment, the invention relates to an association comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabidiol or cannabigerol, - titanium dioxide, - d a solvent for acetyl hexapeptide-1, - an emulsifier for acetyl hexapeptide-1, - a dispersant for zinc oxide, - optionally a coating agent for titanium dioxide, - optionally a support for the coating agent. - and water. In a particular embodiment, the invention relates to an association comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabidiol, - titanium dioxide, - a solvent acetyl hexapeptide-1, - an emulsifier of acetyl hexapeptide-1, - a dispersant of zinc oxide, - optionally a coating agent for titanium dioxide, - optionally a support for the coating agent. - and water. In a particular embodiment, the invention relates to an association comprising or constituting in a mixture: - zinc oxide, - acetyl hexapeptide-1, - cannabigerol, - titanium dioxide, - a solvent acetyl hexapeptide-1, - an emulsifier of acetyl hexapeptide-1, - a dispersant of zinc oxide, - optionally a coating agent for titanium dioxide, - optionally a support for the coating agent. - and water. In a particular embodiment, the invention relates to an association as defined above, in which: - the zinc oxide in dispersion is present in an amount of 10% to 99% by total mass of the association, - acetyl hexapeptide-1 is present at a rate of 1 ppm to 50 ppm, preferably 1 ppm to 10 ppm in total mass of the association, in particular 5 ppm, and - cannabidiol or cannabigerol is present at a rate of 0.1% to 5%, preferably 0.25% to 1.5% as a percentage by total mass of the association. In a particular embodiment, the invention relates to an association as defined above, in which: - the zinc oxide in dispersion is present in an amount of 10% to 99% by total mass of the association, - acetyl hexapeptide-1 is present at a rate of 1 ppm to 50 ppm, preferably from 1 ppm to 10 ppm in total mass of the association, in particular 5 ppm, and - cannabidiol is present at a rate of 0, 1% to 5%, preferably 0.25% to 1.5% as a percentage of the total mass of the association. In a particular embodiment, the invention relates to an association as defined above, in which: - the zinc oxide in dispersion is present in an amount of 10% to 99% by total mass of the association, - acetyl hexapeptide-1 is present at a rate of 1 ppm to 50 ppm, preferably from 1 ppm to 10 ppm in total mass of the association, in particular 5 ppm, and - cannabigerol is present at a rate of 0, 1% to 5%, preferably 0.25% to 1.5% as a percentage of the total mass of the association. The expression “0.1% to 5%” corresponds to the following ranges: from 0.1 to 0.5%: from 0.5 to 1.0%: from 1.0 to 1.5%: from 1 .5 to 2.0%: 2.0 to 2.5%: 2.5 to 3.0%: 3.0 to 3.5%: 3.5 to 4.0%: 4 0 to 4.5%: from 4.5 to 5.0%: and in particular approximately 0.5%. The expression “from 0.25 to 1%” corresponds to the following ranges: from 0.25 to 0.50%: from 0.5 to 0.75%: from 0.75 to 1.0%: and in particular approximately 0.50%. The expression "from 1 ppm to 50 ppm" corresponds to the following ranges: from 1 to 2 ppm: from 2 to 5 ppm: from 5 to 10 ppm: from 10 to 15 ppm: from 15 to 20 ppm: from 20 to 25 ppm: from 25 to 30 ppm: from 30 to 35 ppm: from 35 to 40 ppm: from 40 to 45 ppm: from 45 to 50 ppm: in particular around 5 ppm. The expression “from 1 ppm to 10 ppm” corresponds to the following ranges: from 1 to 2 ppm: from 2 to 3 ppm: from 3 to 4 ppm: from 4 to 5 ppm: from 5 to 6 ppm: from 6 to 7 ppm: from 7 to 8 ppm: from 8 to 9 ppm: from 9 to 10 ppm: in particular around 5 ppm. The expression “10% to 99%” corresponds to the following ranges: from 10 to 20%: from 20 to 30%: from 30 to 40%: from 40 to 50%: from 50 to 60%: from 60 to 70 %: from 70 to 80%: from 80 to 90%: from 90 to 99%. In a particular embodiment, the invention relates to an association as defined above, further comprising titanium dioxide in dispersion present in an amount of 7 to 50%, by mass, preferably 10 to 49%. The expression “7 to 50%” corresponds to the following ranges: from 7 to 15%: from 15 to 20%: from 20 to 30%: from 30 to 40%: from 40 to 50%. In a particular embodiment, the invention relates to a combination as defined above in which: - the solvent of acetyl hexapeptide-1, in particular isopropyl palmitate, is present at a rate of 0.15% at 4% by total mass of the association, - the emulsifier of acetyl hexapeptide-1, in particular lecithin, is present at a rate of 0.032% to 0.80% by total mass of the association, - l Water is present at a rate of 0.008% to 0.20%, in total mass of the association. In a particular embodiment, the invention relates to an association as defined above, further comprising: - titanium dioxide dispersed in a suitable solvent, in particular caprylic capric triglyceride, present at a rate of from 7% to 50%, by total mass of the association, - a first surfactant, in particular polyglyceryl-2 dipolyhydroxystearate, present at a rate of 1.5% to 5%, in particular 2% to 4%, by total mass of the association - a second surfactant, in particular polyglyceryl-3 diisostearate, present at a rate of 1.5% to 5%, in particular 2% to 4%, in total mass of the association, - optionally a coating agent of the titanium dioxide such as alumina, aluminum hydroxide, jojoba esters or stearic acid, present at a rate of 0.5% to 1.5%, in total mass of the association, - optionally a support for the coating agent, in particular in particular stearic acid or polyhydroxystearic acid dispersed in at least one surfactant, in particular chosen from polyglyceryl-2 dipolyhydroxystearate and polyglyceryl-3 diisostearate, present at a rate of 0.5% to 1.5%, in total mass of the association, Another object of the present invention relates to a cosmetic composition comprising the combination as defined above which comprises or consists of a mixture of zinc oxide, acetyl hexapeptide-1 and cannabidiol or cannabigerol, in which said association is present at a rate of 10% to 60% by mass, preferably 15% to 25% by mass, in particular 20% by mass in a cosmetically acceptable medium. By “cosmetic composition” is meant any composition for cosmetic purposes, in particular a composition which can be brought into contact with the superficial parts of the human body, the skin, in particular the epidermis, the mucous membranes and the scalp. For the purposes of the present invention, the term “cosmetic composition” means a non-pharmaceutical composition, that is to say intended for skin which does not require therapeutic treatment, that is to say intended for any area of healthy skin. The term "healthy skin" means an area of skin to which the association or composition according to the invention is applied, said to be "non-pathological" by a dermatologist, that is to say not showing infection, illness, or wounds or injuries and/or other dermatoses. In a particular embodiment, the invention relates to a composition as defined above comprising the combination as defined above which comprises or consists of a mixture of zinc oxide, acetyl hexapeptide-1, of a non-psychotropic phyto-cannabinoid and titanium dioxide, in which said combination is present at a rate of 10% to 60% by mass, preferably 18% to 28% by mass, in particular 25% in a cosmetically acceptable medium . By “a cosmetically acceptable medium”, within the meaning of the invention is meant a medium compatible with use in cosmetics. In a particular embodiment, the invention relates to a composition as defined above, said composition comprising at least one other cosmetic adjuvant or excipient, in particular chosen from: fatty substances, organic solvents, ionic or non-ionic thickeners , softeners, antioxidants, preservatives, emulsifiers, hydrophilic or lipophilic gelling agents, opacifiers, stabilizers, emollients, α-hydroxy acids, anti-foaming agents, moisturizing agents, vitamins, perfumes, preservatives, surfactants, fillers, sequestrants, polymers, propellants, alkalizing or acidifying agents, and dyes. The composition may contain any other ingredient usually used in cosmetics, in particular for the manufacture of compositions intended for exposure to the sun in the form of emulsions. Fatty substances may consist of an oil or wax or mixtures thereof, and they also include fatty acids, fatty alcohols and fatty acid esters. Fatty acid esters can be of plant origin (coconut, palm), or of synthetic origin. The oils can be chosen from vegetable, mineral and synthetic oils, and in particular from petroleum jelly, polybutenes and isobutenes, isoparaffins and poly-^-olefins. Likewise, the waxes can be chosen from fossil, vegetable, mineral and synthetic waxes known per se, and beeswax. The thickeners can be chosen in particular from crosslinked polyacrylic acids, and guar gums and modified or unmodified celluloses such as hydroxy-propylated guar gum, methylhydroxyethylcellulose and hydroxy-propyl-methylcellulose. As “antioxidants”, we can cite, for example, tocopherol (vitamin E) or ascorbic acid (vitamin C). As “preservatives”, we can cite, for example, benzalkonium chloride, phenoxyethanol, or sorbic acid. As “emulsifiers”, we can cite, for example, polyol fatty acid esters, for example glycerol stearate, PEG-40 stearate, sorbitan Trèsstearate, polyoxyethylene sorbitan stearates (Tween®-60 or Tween®-20), ceteareth-20 (ethoxylated), cetyl alcohol. As a “hydrophilic gelling agent”, we can cite, for example, carboxyvinyl polymers, acrylic copolymers, polysaccharides, natural gums, such as xanthan gum, clays, polyacrylamides. As “lipophilic gelling agent” we can cite hydrophobic silica, clays modified with fatty chains. Said adjuvants or excipients may be present in the composition in quantities conventionally used in cosmetics, in particular from 0.01 to 20% as a percentage by mass relative to the total mass of the composition. In a particular embodiment, the invention relates to a composition as defined above, said cosmetic composition being formulated for topical application, in particular topical application of the skin, said composition being in particular in the form of an aerosol , an emulsion, a cream, a gel, a dispersion, a serum, a foam, a body milk or an anhydrous balm, preferably in the form of a body milk or cream. Another object of the present invention relates to the use of a combination of the invention as defined above or of a cosmetic composition according to the invention as defined above as a protective agent from solar radiation (solar product ), in particular as sun milk. Another object of the present invention is the use of an association according to the invention as defined above, or of a cosmetic composition according to the invention as defined above, in the cosmetic treatment of healthy skin. , particularly sensitive and/or reactive. The term “sensitive and/or reactive skin” means any skin subject to a feeling of discomfort which may manifest itself by more or less diffuse and localized redness, itching, tightness, irritation, burning sensations. According to another particular embodiment, the present invention relates to the cosmetic use of an association according to the invention, or of a cosmetic composition according to the invention as defined above, in the cosmetic treatment of sensitive skin and/or or reactive. For the purposes of the present invention, “cosmetic treatment” means a non-therapeutic treatment, that is to say intended for any area of healthy skin. Another object of the present invention is a method of cosmetic treatment of healthy skin, in particular sensitive skin, comprising the topical application to healthy skin of an association according to the invention as defined above, or of a cosmetic composition according to the invention as defined above to reduce the sensations of tingling, tingling, itching or pruritus, burning, heating, discomfort or tightness of the skin. For the purposes of the present invention, the term “cosmetic treatment method” means a method which does not require therapeutic treatment, that is to say a treatment method intended for any area of healthy skin. According to another particular embodiment, the present invention relates to a method of cosmetic treatment, in particular of sun protection, for healthy skin, in particular sensitive skin, comprising an application of 1 to 5 times per day, in particular an application every two hours on a healthy skin. According to another particular embodiment, the present invention relates to a method of cosmetic treatment, in particular sun protection, erythema and inflammation. of the skin due to exposure to the sun, comprising the application to the skin of an association according to the invention, or of a cosmetic composition according to the invention. Another object of the present invention relates to a dermatological composition, comprising as active substance, an association according to the invention as defined above, with a pharmaceutically acceptable excipient, said composition being in particular formulated for a topical application, in particular an application topical to the skin, said composition being in particular in the form of an aerosol, an emulsion, a cream, a gel, a dispersion, a serum, a foam, a body milk or anhydrous balm. By “dermatological composition” is meant any composition for pharmaceutical purposes which can be brought into contact with the superficial parts of the human body, the skin, in particular the epidermis. In a particular embodiment, the invention relates to a dermatological composition according to the invention as defined above, further comprising one or more active substances chosen from agents which fight against glycation, agents stimulating the synthesis of collagen or elastin or preventing their degradation, agents stimulating the synthesis of glycosaminoglycans or proteoglycans or preventing their degradation, anti-radical or anti-pollution agents, draining or detoxifying agents, desquamating agents, soothing agents and/or anti-irritants, astringent agents, agents acting on microcirculation, and mixtures thereof. The list of active substances above is given in a non-limiting manner. The compositions according to the invention may also comprise one or more other additional active substances, the skilled person however ensuring that the possible complementary active compounds, as well as their proportions, are chosen in such a way that the advantageous properties recognized in the compositions according to the invention are not altered. In a particular embodiment, the invention relates to a dermatological composition according to the invention as defined above, for its use for photoprotection against solar radiation. Another object of the present invention relates to a process for preparing a composition comprising the combination of a mixture of zinc oxide, acetyl hexapeptide-1 and cannabidiol or cannabigerol comprising the following steps: - a first step of preparing the aqueous phase A, said phase A comprising water, NaCl or MgSO 4 , and propanediol, comprising the dissolution of the elements of phase A brought to temperature, in particular from 70 to 80°C, - a second step of introducing the elements of phase B, said phase B comprising cannabidiol, acetyl hexapeptide-1 and zinc oxide, optionally TiO 2 , comprising: ^ the introduction of cannabidiol, acetyl hexapeptide-1 and other elements of phase B with deflocculating stirring, preferably from 800 to 1800 rpm, in particular for 10 min, preferably from 70 to 80°C, in the aqueous phase A, to form a clear solution, ^ then the introduction of ZnO optionally with TiO2 with deflocculating stirring, preferably from 800 to 1800 rpm, in particular for 10 min, at a temperature of 70 to 80 ° C, in the aqueous phase A, ^ then aspiration of the aqueous phase, in particular at 25 mL/min, with deflocculating stirring from 800 to 1800 rpm, giving a remaining solution in the form of an oily emulsion, ^ maintaining the stirring for 10 min at a temperature of 70-80°C and then maintaining stirring during the cooling phase of the remaining solution, - optionally a step of introducing phase C, said phase C comprising perfumes or preservatives, at a temperature of approximately 40°C during the cooling stage. Particular embodiments of formulations according to the invention are given without limitation. The inventors have developed a formulation with the proportions indicated in Table 1. Said formulation comprises a mixture of Xperse® 501 comprising zinc oxide, Mélinoil TM comprising acetyl hexapeptide-1 and cannabidiol. The formulation in Table 1 can be used as an SPF30 sunscreen composition. Table 1. Formulation of an emulsion as SPF30 sunscreen Another formulation developed by the Inventors is that with the proportions indicated in Table 2. Said formulation comprises a mixture of Xperse® 501 including zinc oxide, Mélinoil TM comprising acetyl hexapeptide-1, cannabidiol and GranLux®TGL-50 comprising titanium dioxide. The formulation in Table 2 can be used in particular as an SPF50 sunscreen composition. Table 2. Formulation of an emulsion as SPF50 sunscreen The following examples and figures illustrate the invention, without limiting its scope. LIST OF FIGURES Figure 1 represents the UV absorption spectrum of an SPF30 sun cream according to the invention comprising ZnO, Melinoil TM and CBD. Figure 2 represents the UV absorption spectrum of an SPF50 sun cream according to the invention comprising ZnO, TiO 2 , Melinoil TM and CBD. EXAMPLES Example 1 – Composition of an SPF30 sunscreen Table 3. Composition of an SPF30 sunscreen Example 2 – Preparation of an SPF30 sunscreen The sun protection cream of Example 1 was prepared following the protocol described below. In a beaker, the ingredients of the Phase A solution including water, NaCl chloride and propanediol were weighed separately and mixed forming a solution. The solution was stirred to dissolve the NaCl salt at a temperature of 72 to 75°C. The ingredients of phase B were weighed and were introduced into the beaker to the solution of phase A, except the ingredient comprising ZnO (Xperse®501) and Lauroy lysine (Amihope®LL), under deflocculating stirring. , from 1000 to 1800 rpm for 10 min at a temperature of 75 to 80°C ZnO was then added with vigorous deflocculating stirring, from 1000 to 1800 rpm, at least 10 minutes Lauroyl lysine was added with vigorous stirring deflocculator, from 1000 to 1800 rpm, for at least 5 minutes. The aqueous phase of the solution in the beaker was sucked up slowly when the solution was vigorously stirred from 1000 rpm to 1800 rpm. The remaining solution was cooled. The ingredients of phase C (perfume and preservative) were added one by one and mixed 5 minutes between each addition. An emulsion in the form of a creamy, homogeneous and stable cream was obtained. An emulsion stability test was carried out 24 hours after emulsion preparation. The cream underwent a centrifugation test for 10 minutes at 3000 rpm (1600-1800 G) and retained its appearance of a homogeneous and stable emulsion. Example 3: Composition of an SPF50 sunscreen Table 4. Composition of an SPF50 sun milk of an SPF50 sun cream The emulsion of Example 3 was prepared hot according to the protocol described below. In a beaker, the ingredients of the Phase A solution including water, sodium chloride NaCl and propanediol were weighed separately and mixed. The solution was stirred to dissolve the NaCl salt at a temperature of 70 to 75°C. The ingredients of phase B were weighed and were introduced into the beaker with the solution of phase A, except the ingredient comprising ZnO (Xperse®501) and that comprising TiO 2 (GrandLux®, under deflocculating stirring). from 1000 to 1800 rpm for 10 min at a temperature of 75 to 80 ° C, forming a clear solution. The ingredients comprising ZnO and TiO 2 were then added with vigorous stirring to deflocculate, for at least 10 minutes, while maintaining the temperature of 75 to 80 ° C. The aqueous phase of the solution in the beaker was slowly sucked off while the solution was vigorously stirred from 800 rpm to 1800 rpm, for 10 minutes while maintaining the temperature. was cooled while maintaining deflocculating stirring, from 800 rpm to 1800 rpm. The ingredients of phase C were added one by one at a temperature of approximately 40° C. An emulsion in the form of a creamy cream , homogeneous and stable was obtained. A stability test of the emulsion was carried out 24 hours after the preparation of the emulsion. The cream underwent a centrifugation test for 15 minutes between 1500-2000 G and retained its appearance of a homogeneous and stable emulsion. Solar Principle The level of protection of a cosmetic product containing sun filters can be evaluated by an in vitro spectrophotometric method. The method makes it possible to provide: - the protection coefficient “SPF”, - the UVA protection factor “PF-UVA”, and - the Critical Wavelength “LOC”, which must not be less than 370 nm, for that the formulated products can claim conformity of their UVA protection value, through a UVA logo. To determine the effectiveness of sunscreen products, we evaluate their ability to prevent erythema which appears on the surface of the skin if it is exposed for a certain period of time to a source of UV energy. UVB only represents approximately 5% of the total UV energy received (UVA + UVB), but given their energy, they have a major effect on the appearance of this erythema. UVA rays contribute around 16% to the appearance of sunburn. The method used consists of measuring the UV energy flow passing through the cream, expressed in energy transmission and comparing this flow to the initial flow according to the principle of any spectrophotometric method: F( ^) = I / I0 Where: - ^ is the wave length ; - I is the UV energy flux; - I0 is the initial energy flow. However, the comparison of these two curves is not sufficient to express the level of protection of the product spread on the skin. Indeed, two other wave functions are involved: ^ The wave function of the source: In practice, this is the sun whose spectrum was defined by the International Commission on Illumination as a function of S wave( ^). ^ The wave function concerning the skin: Cutaneous or subcutaneous reactions depend on the energy of the excitation light and are expressed in the form of a wave function E( ^). By integrating each of these 3 curves over the entire UVB and UVA range and making the product of the 3 integrals, we will obtain the expression of the SPF In Vitro. This method was initially described by B. Diffey and J. Robson (JSCC 40.127-133 - 1989). It is today widely used and recognized by international bodies. Materials and method Laboratory materials - A UV spectrophotometer, Kontron 933 (BIO-TEK Kontron instruments) equipped with a UV source and a monochromator as well as an integrating sphere capable of delivering a flow of UV energy between 290 and 400 nm. The wavelength increment is 1nm. - A solar simulator, Suntest CPS+ (Atlas) to reproduce sunlight and take into account possible photodegradation of the tested sample. The sample is spread on Sunplate polymethyl methacrylate (PMMA) plates (Helioscience), measuring 5 x 5 cm, having a rough phase obtained by sandblasting. The tested product is spread according to the quantity recommended by the standards, i.e. 1.3 mg/cm 2 for PMMA. It can either be spread by spraying the product onto the plates, or by application to the rough phase of the plate using a bare finger pre-saturated with product in a standardized and controlled manner in order to obtain a film homogeneous. The sample is exposed to 2 minimum “MED” erythemal doses. The MED value was chosen at 550 W/m 2 , this value corresponding to exposure to zenithal sunlight. With this standard solar light, while receiving 2 MED, the product will therefore receive: 400 J/m 2 . The measuring device is calibrated beforehand with PMMA plates. The tests are carried out on 3 PMMA plates on which the product is deposited. 4 measurements per plate were carried out with the spectrometer. Determination of the SPF value The SPF in vitro is expressed from the entire residual UVB and UVA spectrum having passed through the layer of cream spread on the plate. However, this wave function T( ^) must be multiplied by: - A first wave function which expresses the spectral characteristic of the sun S( ^). - A second wave function which expresses the reactivity of the skin as a function of the wavelength (and therefore the energy dissipated): the erythematous function E( ^). With: - E( ^) is the action spectrum of the erythema - S( ^) is the standard solar spectrum - T( ^) is the average transmission of the layer of the test product spread on an appropriate support - d( ^) is the wavelength interval (1 nm) Determination of the PF-UVA value In vitro UVA protection is expressed from the entire residual UVA spectrum having passed through the same layer of cream. With: - P( ^) is the action spectrum of the PPD - L( ^) is the spectrum of the Xenon arc lamp - T( ^) is the average transmission of the layer of the test product spread on a suitable medium - d( ^) is the wavelength interval (1 nm) Determination of the LOC value In the calculation, λc corresponds to the wavelength for which the area under the absorption curve reaches 90 % of total area from 290 nm to 400 nm. The critical wavelength will therefore be determined according to the formula: With : - λc corresponds to the critical wavelength - A(λ) corresponds to the absorption - d(λ) corresponds to the wavelength interval between measurements The critical wavelength λc of the product tested is obtained by calculating the arithmetic mean of the different measurements: all the selected measurements are taken into account for the calculation of the statistical dispersion. Statistical expression of the results The average protection index of the preparation studied is obtained by calculating the arithmetic mean of the protection indices of each test. The calculations are obtained using specific software which provides immediate access and without any manipulation to all the calculations necessary to obtain the values. Example 6 – Protection tests of an SPF30 cream The sun protection of the SPF 30 sun cream of the invention according to Example 1 was analyzed according to the method presented in Example 5 with a spreading of the sun cream on the plates by spraying. The results are reported in Table 5. Table 5: Protection analysis of an SPF 30 cream As indicated in the UV spectrum in Figure 1, the SPF30 sun milk of the invention according to the composition described in Example 1, has well-balanced protection, between UVB and UVA. Example 7 – SPF50 protection tests The sun protection of the SPF 50 sun cream of the invention according to Example 3 was analyzed according to the method presented in Example 5 with spreading of the sun cream on the plates by spraying. The results are reported in table 6. Table 6: Protection analysis of an SPF 50 cream As indicated in the UV spectrum in Figure 2, the SPF50 sun milk of the invention according to the composition described in Example 3, has well-balanced protection, between UVB and UVA. Example 8 – Comparative tests In order to evaluate the influence of the combination of zinc oxide, acetyl hexapeptide-1 and a non-psychotropic cannabinoid such as cannabidiol, four sunscreen compositions distinguished by the presence of these different components have been prepared: - Cream 1, also called “base 30”, is a sun protection factor SPF30 cream comprising zinc dioxide; its composition is reported in table 7 above; - Cream 2, called “base 30 + Mélinoil TM ”, corresponds to the “base 30” cream above additionally comprising Mélinoil TM , i.e. acetyl hexapeptide-1; its composition is reported in Table 8 - Cream 3, called “base 30 + CBD”, corresponds to the “base 30” cream above additionally comprising canabidiol (CBD), of composition according to Table 9 - The cream 4, called “base 30 + Mélinoil TM + CBD” corresponds to the “base 30” cream additionally comprising Mélinoil TM and cannabidiol (CBD), of composition according to table 10. In order to be able to carry out a comparison of the influence of the different constituents of the combination of zinc oxide, acetyl hexapeptide-1 and cannabidiol, the four creams tested were prepared within a 24-hour interval with the same operator, the same equipment and in particular the same batch numbers of cosmetic ingredients. Thus the fluctuations which may come from external experimental conditions such as the variability of the composition of the batches of cosmetic ingredients, in particular the ZnO content in the corresponding cosmetic ingredient, are minimized. Note that the batch number of the cosmetic ingredient containing ZnO used to prepare the four creams is different from that of Example 1. Table 7: Composition of cream 1 of “base 30” with SPF30 index including ZnO Table 8: Composition of cream 2 “base 30 + Mélinoil TM ” Table 10: Composition of cream 4 “base 30 + Mélinoil TM + CBD” Sun protection of the four sunscreen compositions (cream 1 “base 30”, cream 2 “base 30 + Mélinoil TM ”, cream 3 “base 30 + CBD" and cream 4 "base 30 + Mélinoil TM +CBD) presented respectively in tables 7 to 10 were analyzed according to the method presented in example 5 with spreading of the creams on the plates by a manual application standardized to the using a bare finger pre-saturated in cream. The results on the SPF sun protection index, UVA value and LOC wavelength are reported in Table 11. Table 11: Sun protection of different creams comprising different components of the combination of zinc oxide, acetyl hexapeptide-1 and cannabidiol The results in Table 11 relating to the analyzes of the sun protection of the four creams each comprising different components of the association: zinc oxide, acetyl hexapeptide-1 and cannabidiol, demonstrate that in a basic sun cream with an SPF30 index containing zinc oxide (ZnO), Melinoil TM , consequently acetyl hexapeptide-1, potentiates the activity of cannabidiol (CBD) with respect to the SPF sun protection index and the UVA value, by increasing these values. Indeed, when Melinoil TM , namely acetyl hexapeptide-1, is added to the base cream 30 with an SPF30 index comprising ZnO, there is a negligible effect on the SPF sun protection index value, this value being 31.6 for cream 1 of “base 30” and 32.8 for cream 2 of “base 30 + Mélinoil TM ”, an increase of 3.8%. On the contrary, the addition of cannabidiol (CBD) presents an effect on the sun protection index, its introduction allows an increase in protection of approximately 18.7% with an SPF value of 37.5 for the 3 "cream base 30 + CBD”. Surprisingly, these results also reveal that the combination of Mélinoil TM and CBD in a cream containing zinc oxide (cream 4 “base 30 + Mélinoil TM + CBD”) shows an effect since this association makes it possible to increase the value of the SPF index to a value of 44.6, i.e. increasing the SPF protection index by 41.1% compared to the composition of the base 30. It should be noted that the increase in the sun protection is higher than the simple addition of the effects of Melinoil TM (increase of 3.8%) and that of CBD (increase of 18.7%) on the value of the SPF index. We see that the combination of Melinoil and CBD allows an increase of 41.1%, more than twice that of the simple addition of CBD. A synergistic effect is also observed on the average UVA value, although Mélinoil TM reduces the UVA value by -10.5% when it is combined alone with a base 30 sunscreen with an SPF30 index containing zinc oxide. , it potentiates and increases it when combined with CBD. In fact, an increase of 2.8 points in the UVA index (i.e. 15.5%) is observed when CBD is added while an increase of 4.5 points (i.e. 24.9%) on the index UVA is obtained when we add both Melinoil TM and CBD. No impact was observed from the addition of Mélinoil TM , i.e. actetyl hexapeptide-1, and cannabidiol on the LOC value, the LOC values being identical for the four sun creams studied.
Claims
REVENDICATIONS 1. Association comprenant ou constituant en un mélange d’oxyde de zinc, d’acétyl hexapeptide-1 et de cannabidiol ou de cannabigérol. CLAIMS 1. Association comprising or constituting a mixture of zinc oxide, acetyl hexapeptide-1 and cannabidiol or cannabigerol.
2. Association selon la revendication 1, comprenant en outre du dioxyde de titane. 2. Association according to claim 1, further comprising titanium dioxide.
3. Association selon la revendication 1, comprenant en outre : - un solvant de l’acétyl hexapeptide-1 en particulier le palmitate d’isopropyle, - un émulsifiant de l’acétyl hexapeptide-1 en particulier la lécithine, - un dispersant de l’oxyde de zinc, en particulier le triglycéride caprylique caprique - et de l’eau. 3. Association according to claim 1, further comprising: - a solvent for acetyl hexapeptide-1, in particular isopropyl palmitate, - an emulsifier for acetyl hexapeptide-1, in particular lecithin, - a dispersant for acetyl hexapeptide-1, in particular lecithin, zinc oxide, especially caprylic capric triglyceride - and water.
4. Association selon la revendication 3, comprenant en outre : - du dioxyde de titane, - éventuellement un agent d’enrobage du dioxyde de titane tel que l’alumine, l’hydroxdyde d’aluminium, les esters de jojoba ou l’acide stéarique, - éventuellement un support de l’agent d’enrobage, en particulier l’acide stéarique ou l’acide polyhydroxystéarique en dispersion dans au moins un tensio-actif, en particulier choisi parmi le polyglycéryl-2 Dipolyhydroxystearate et le polyglycéryl-3 diisostearate. 5. Association selon l’une des revendications 1 à 4, dans laquelle : - l’oxyde de zinc en dispersion est présent à raison de 10% à 99% en masse totale de l’association, - l’acétyl hexapeptide-1 est présent à raison de 1 ppm à 50 ppm, de préférence de 1 ppm à 10 ppm en masse totale de l’association, en particulier 5 ppm, et - le cannabidiol ou le cannabigérol est présent à raison de à 0,1% à 5%, de préférence de 0,25% à 1,4. Association according to claim 3, further comprising: - titanium dioxide, - optionally a coating agent for titanium dioxide such as alumina, aluminum hydroxide, jojoba esters or acid stearic, - optionally a support for the coating agent, in particular stearic acid or polyhydroxystearic acid dispersed in at least one surfactant, in particular chosen from polyglyceryl-2 dipolyhydroxystearate and polyglyceryl-3 diisostearate . 5. Association according to one of claims 1 to 4, in which: - the zinc oxide in dispersion is present in an amount of 10% to 99% by total mass of the association, - acetyl hexapeptide-1 is present at a rate of 1 ppm to 50 ppm, preferably from 1 ppm to 10 ppm in total mass of the association, in particular 5 ppm, and - cannabidiol or cannabigerol is present at a rate of 0.1% to 5 %, preferably from 0.25% to 1,
5% en pourcentage en masse totale de l’association. 5% as a percentage of the total mass of the association.
6. Association selon la revendication 5, comprenant en outre du dioxyde de titane en dispersion présent à raison de 7 à 50%, en masse, de préférence de 10 à 49%. 6. Association according to claim 5, further comprising titanium dioxide in dispersion present in an amount of 7 to 50%, by mass, preferably 10 to 49%.
7. Composition cosmétique comprenant l’association selon l’une des revendications 1, 3 et 5, dans laquelle ladite association est présente à raison de 10% à 60% en masse, de préférence 15% à 25% en masse, en particulier 20% en masse dans un milieu cosmétiquement acceptable.
7. Cosmetic composition comprising the association according to one of claims 1, 3 and 5, in which said association is present in an amount of 10% to 60% by mass, preferably 15% to 25% by mass, in particular 20 % by mass in a cosmetically acceptable medium.
8. Composition cosmétique comprenant l’association selon l’une des revendications 2, 4 et 6, dans laquelle ladite association est présente à raison de 10% à 60% en masse, de préférence 18% à 28% en masse, en particulier 25% dans un milieu cosmétiquement acceptable. 8. Cosmetic composition comprising the association according to one of claims 2, 4 and 6, in which said association is present in an amount of 10% to 60% by mass, preferably 18% to 28% by mass, in particular 25 % in a cosmetically acceptable environment.
9. Composition cosmétique selon l’une des revendications 7 ou 8, ladite composition comprenant au moins un autre adjuvant ou excipient cosmétique, notamment choisi parmi : les corps gras, les solvants organiques, les épaississants ioniques ou non ioniques, les adoucissants, les antioxydants, les conservateurs, les émulsifiants, les gélifiants hydrophiles ou lipophiles, les opacifiants, les stabilisants, les émollients, les α-hydroxyacides, les agents anti mousse, les agents hydratants, les vitamines, les parfums, les conservateurs, les tensioactifs, les charges, les séquestrants, les polymères, les propulseurs, les agents alcalinisants ou acidifiants, et les colorants. 9. Cosmetic composition according to one of claims 7 or 8, said composition comprising at least one other cosmetic adjuvant or excipient, in particular chosen from: fatty substances, organic solvents, ionic or non-ionic thickeners, softeners, antioxidants , preservatives, emulsifiers, hydrophilic or lipophilic gelling agents, opacifiers, stabilizers, emollients, α-hydroxy acids, anti-foaming agents, moisturizing agents, vitamins, perfumes, preservatives, surfactants, fillers , sequestrants, polymers, propellants, alkalizing or acidifying agents, and dyes.
10. Composition cosmétique selon l’une des revendications 7 à 9, ladite composition cosmétique étant formulée pour une application topique, en particulier une application topique de la peau, ladite composition étant notamment sous la forme d’un aérosol, d’une émulsion, d’une crème, d’un gel, d’une dispersion, d’un sérum, d’une mousse, d’un lait corporel ou d’un baume anhydre, de préférence sous forme d’un lait corporel ou d’une crème. 10. Cosmetic composition according to one of claims 7 to 9, said cosmetic composition being formulated for topical application, in particular topical application of the skin, said composition being in particular in the form of an aerosol, an emulsion, a cream, a gel, a dispersion, a serum, a foam, an anhydrous body milk or balm, preferably in the form of a body milk or a cream.
11. Utilisation d’une association selon l’une des revendications 1 à 6 ou d’une composition cosmétique selon l’une des revendications 7 à 10 comme agent protecteur du rayonnement solaire, en particulier comme lait solaire. 11. Use of an association according to one of claims 1 to 6 or of a cosmetic composition according to one of claims 7 to 10 as a protective agent from solar radiation, in particular as a sun milk.
12. Composition dermatologique, comprenant comme substance active, une association selon l’une des revendications 1 à 6, avec un excipient pharmaceutiquement acceptable, ladite composition étant notamment formulée pour une application topique, en particulier une application topique de la peau, ladite composition étant notamment sous la forme d’un aérosol, d’une émulsion, d’une crème, d’un gel, d’une dispersion, d’un sérum, d’une mousse, d’un lait corporel ou d’un baume anhydre. 12. Dermatological composition, comprising as active substance, an association according to one of claims 1 to 6, with a pharmaceutically acceptable excipient, said composition being in particular formulated for topical application, in particular topical application of the skin, said composition being in particular in the form of an aerosol, an emulsion, a cream, a gel, a dispersion, a serum, a foam, a body milk or an anhydrous balm .
13. Composition dermatologique selon la revendication 12, comprenant en outre une ou plusieurs substances actives choisis parmi les agents qui luttent contre la glycation, les agents stimulant la synthèse de collagène ou d’élastine ou prévenant leur dégradation, les agents stimulant la synthèse de glycosaminoglycanes
ou de protéoglycanes ou prévenant leur dégradation, les agents anti-radicalaires ou anti- pollution, les agents drainants ou détoxifiants, les agents desquamant, les agents apaisants et/ou anti-irritants, les agents astringents, les agents agissant sur la microcirculation, et leurs mélanges. 13. Dermatological composition according to claim 12, further comprising one or more active substances chosen from agents which fight against glycation, agents stimulating the synthesis of collagen or elastin or preventing their degradation, agents stimulating the synthesis of glycosaminoglycans or proteoglycans or preventing their degradation, anti-radical or anti-pollution agents, draining or detoxifying agents, desquamating agents, soothing and/or anti-irritant agents, astringent agents, agents acting on microcirculation, and their mixtures.
14. Composition dermatologique selon l’une des revendications 12 ou 13, pour son utilisation pour la photoprotection contre le rayonnement solaire. 14. Dermatological composition according to one of claims 12 or 13, for its use for photoprotection against solar radiation.
15. Procédé de préparation d’une composition comprenant l’association d’un mélange d’oxyde de zinc, d’acétyl hexapeptide-1 et de cannabidiol ou de cannabigérol, comprenant les étapes suivantes : - une première étape de préparation de la phase aqueuse A, ladite phase A comprenant de l’eau, du NaCl ou du MgSO4, et du propanediol, comprenant la dissolution des éléments de la phase A portée en température, en particulier de 70 à 80°C, - une deuxième étape d’introduction des éléments de la phase B, ladite phase B comprenant le cannabidiol, l’acétyl hexapeptide-1 et l’oxyde de zinc, éventuellement du TiO2, comprenant : ^ l’introduction du cannabidiol, de l’acétyl hexapeptide-1 et des autres éléments de la phase B sous agitation défloculeuse, de préférence de 800 à 1800 tr/min, en particulier pendant 10 min, de préférence de 70 à 80°C, dans la phase aqueuse A, pour former une solution limpide, ^ puis l’introduction du ZnO éventuellement avec TiO2 sous agitation défloculeuse, de préférence de 800 à 1800 tr/min, en particulier pendant 10 min, à une température de 70 à 80°C, dans la phase aqueuse A, ^ puis l’aspiration de la phase aqueuse, en particulier à 25 mL/min, sous agitation défloculeuse de 800 à 1800 tr/min, donnant une solution restante sous forme d’une émulsion huileuse, ^ le maintien de l’agitation pendant 10 min à température de 70-80°C et puis le maintien de l’agitation pendant la phase de refroidissement de la solution restante, - éventuellement une étape d’introduction de la phase C, ladite phase C comprenant des parfums ou des conservateur, à une température d’environ de 40°C lors de l’étape de refroidissement.
15. Process for preparing a composition comprising the combination of a mixture of zinc oxide, acetyl hexapeptide-1 and cannabidiol or cannabigerol, comprising the following steps: - a first step of preparing the phase aqueous A, said phase A comprising water, NaCl or MgSO4, and propanediol, comprising the dissolution of the elements of phase A brought to temperature, in particular from 70 to 80°C, - a second step of introduction of the elements of phase B, said phase B comprising cannabidiol, acetyl hexapeptide-1 and zinc oxide, optionally TiO2, comprising: ^ the introduction of cannabidiol, acetyl hexapeptide-1 and other elements of phase B with deflocculating stirring, preferably from 800 to 1800 rpm, in particular for 10 min, preferably from 70 to 80°C, in the aqueous phase A, to form a clear solution, ^ then l introduction of ZnO optionally with TiO2 with deflocculating stirring, preferably from 800 to 1800 rpm, in particular for 10 min, at a temperature of 70 to 80 ° C, in the aqueous phase A, ^ then aspiration of the aqueous phase, in particular at 25 mL/min, with deflocculating stirring from 800 to 1800 rpm, giving a remaining solution in the form of an oily emulsion, ^ maintaining stirring for 10 min at a temperature of 70-80 °C and then maintaining stirring during the cooling phase of the remaining solution, - optionally a step of introducing phase C, said phase C comprising perfumes or preservatives, at a temperature of approximately 40 °C during the cooling stage.
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FR2203487A FR3134519A1 (en) | 2022-04-14 | 2022-04-14 | NEW COMPOSITIONS COMBINING AT LEAST ONE INORGANIC SOLAR FILTER AND THEIR USE |
FRFR2203487 | 2022-04-14 |
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WO2023198800A1 true WO2023198800A1 (en) | 2023-10-19 |
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PCT/EP2023/059595 WO2023198800A1 (en) | 2022-04-14 | 2023-04-12 | New compositions combining at least one inorganic solar filter, and use thereof |
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WO (1) | WO2023198800A1 (en) |
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FR2835528A1 (en) | 2002-02-01 | 2003-08-08 | Inst Europ Biolog Cellulaire | NEW PEPTIDIC DERIVATIVES, THEIR PREPARATION AND THEIR THERAPEUTIC AND COSMETIC APPLICATION |
US20200038305A1 (en) * | 2018-08-02 | 2020-02-06 | Divios LLC | Sunscreen or Sunblock Composition |
CN113827511A (en) * | 2021-08-30 | 2021-12-24 | 北京茂思商贸有限公司 | Anti-light damage plant seed oil transparent microemulsion composition and preparation method thereof |
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- 2022-04-14 FR FR2203487A patent/FR3134519A1/en active Pending
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- 2023-04-12 WO PCT/EP2023/059595 patent/WO2023198800A1/en unknown
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FR2835528A1 (en) | 2002-02-01 | 2003-08-08 | Inst Europ Biolog Cellulaire | NEW PEPTIDIC DERIVATIVES, THEIR PREPARATION AND THEIR THERAPEUTIC AND COSMETIC APPLICATION |
US20200038305A1 (en) * | 2018-08-02 | 2020-02-06 | Divios LLC | Sunscreen or Sunblock Composition |
CN113827511A (en) * | 2021-08-30 | 2021-12-24 | 北京茂思商贸有限公司 | Anti-light damage plant seed oil transparent microemulsion composition and preparation method thereof |
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