EP1438011A1 - Utilisation d'une ou de plusieurs substances selectionnees dans le groupe des pyrimidines ou des purines dans des preparations cosmetiques pour haler la peau - Google Patents

Utilisation d'une ou de plusieurs substances selectionnees dans le groupe des pyrimidines ou des purines dans des preparations cosmetiques pour haler la peau

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Publication number
EP1438011A1
EP1438011A1 EP02782834A EP02782834A EP1438011A1 EP 1438011 A1 EP1438011 A1 EP 1438011A1 EP 02782834 A EP02782834 A EP 02782834A EP 02782834 A EP02782834 A EP 02782834A EP 1438011 A1 EP1438011 A1 EP 1438011A1
Authority
EP
European Patent Office
Prior art keywords
skin
acid
derivatives
group
preparations
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02782834A
Other languages
German (de)
English (en)
Inventor
Werner Berens
Rainer Wolber
Christoph Smuda
Jan Batzer
Claudia Mundt
Franz STÄB
Thomas Blatt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beiersdorf AG
Original Assignee
Beiersdorf AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beiersdorf AG filed Critical Beiersdorf AG
Publication of EP1438011A1 publication Critical patent/EP1438011A1/fr
Withdrawn legal-status Critical Current

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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
    • A61K8/60—Sugars; Derivatives thereof
    • A61K8/606—Nucleosides; Nucleotides; Nucleic acids
    • 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
    • A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
    • A61K8/494—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with more than one nitrogen as the only hetero atom
    • A61K8/4953—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with more than one nitrogen as the only hetero atom containing pyrimidine ring derivatives, e.g. minoxidil
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/04—Preparations for care of the skin for chemically tanning the skin

Definitions

  • the present invention relates to cosmetic and dermatological preparations for tanning the skin, in particular those which simultaneously offer protection against UV radiation.
  • UVC range rays with a wavelength shorter than 290 nm
  • UVB range rays in the range between 290 nm and 320 nm, the so-called UVB range, cause erythema simple sunburn or even more or less severe burns.
  • the narrower range around 308 nm is given as a maximum of the erythema effectiveness of sunlight.
  • UVA range It is also important to have filter substances available for the range between about 320 nm and about 400 nm, the so-called UVA range, since their rays can also cause damage. It has been shown that UVA radiation damages the elastic and collagen fibers of the connective tissue, which causes the skin to age prematurely, and that it is the cause of numerous phototoxic and photoallergic reactions can be seen. The damaging influence of UVB radiation can be intensified by UVA radiation.
  • UV-A radiation can also cause skin damage by damaging the skin's keratin or elastin. This reduces the skin's elasticity and water retention capacity, i.e. the skin becomes less supple and tends to wrinkle.
  • the strikingly high incidence of skin cancer in areas exposed to strong sunlight shows that the genetic information in the cells is apparently also damaged by sunlight.
  • UV radiation can also lead to photochemical reactions, in which case the photochemical reaction products interfere with the skin's metabolism.
  • radical compounds e.g. Hydroxyl radicals.
  • Undefined radical photo products which are created in the skin itself, can also display uncontrolled subsequent reactions due to their high reactivity.
  • singlet oxygen a non-radical excited state of the oxygen molecule can occur with UV radiation, just as short-lived epoxies and many others.
  • Singlet oxygen for example, is characterized by increased reactivity compared to the triplet oxygen normally present (radical ground state). However, there are also excited, reactive (radical) triplet states of the oxygen molecule.
  • UV radiation is also ionizing radiation. There is therefore a risk that ionic species also develop when exposed to UV rays, which in turn can oxidatively intervene in the biochemical processes.
  • the pigmentation of the human skin is essentially caused by the presence of melanin.
  • Melanin and its breakdown products (melanoids), carotene, degree of blood circulation and the nature and thickness of the stratum corneum and other skin layers leave skin tones of practically white (with reduced filling or in the absence of blood vessels) or yellowish over light brown-reddish, bluish to brown of various shades and finally appear almost black.
  • the individual skin regions show different depths of color tint due to different amounts of melanin.
  • the natural melanin protects the skin from penetrating UV radiation. The number of melanin granules produced in the melanocytes determines whether they are light or dark.
  • melanin can also be found in the stratum spinosum and even in the stratum corneum. It weakens the UV radiation by up to approx. 90% before it reaches the corium.
  • melanocytes contain melanosomes, in which the melanin is formed. When stimulated by UV radiation, among other things, melanin is increasingly formed. This is ultimately transported into the horny layer (corneocytes) via the living layers of the epidermis (keratinocytes) and causes the more or less pronounced brown to brown-black skin color.
  • Melanin is formed as the final stage of an oxidative process in which tyrosine, with the help of the enzyme tyrosinase, is converted into brown to brown-black eumelanines (DHICA and DHI melanin) over several intermediate stages or with the participation of sulfur-containing compounds to reddish pheomelanin.
  • DHICA and DHI melanin are produced via the common intermediate stages dopaquinone and dopachrome.
  • the latter is implemented, partly with the participation of further enzymes, either in indole-5,6-quinone carboxylic acid or in indole-5,6-quinone, from which the two eumelanins mentioned arise.
  • the formation of phaeomelanin occurs, among other things, via the intermediates dopaquinone and cysteinyldopa.
  • melanin In addition to various functions of the skin's own melanin (also detoxification of toxic substances / pharmaceuticals, etc.), the function of melanin as a natural UV filter to protect against damaging UV rays and the antioxidant function of melanin as protection against reactive oxygen species (oxidative stress ), which can occur, among other things, from solar radiation, very important for skin, among other things in relation to homeostasis; Avoidance of skin aging, avoidance of sunburn, etc. This not only results in a cosmetic benefit in the sense of increased tanning due to the increased melanin synthesis in the skin after topical application of the active ingredient according to the invention, but also additional protection through the various protective benefits of melanin.
  • oxidative stress reactive oxygen species
  • Skin type I never tans, always gets a sunburn.
  • Skin type II hardly tans, easily gets sunburned.
  • Skin type III tans well on average.
  • Skin type IV tans lightly and persistently, almost never gets sunburned.
  • Skin type V dark, often almost black skin, never gets sunburned.
  • carotene is stored in the subcutaneous fatty tissue, the skin gradually turns orange to yellow-brown.
  • a light skin tint can be achieved (e.g. extracts from fresh green walnut shells, henna)
  • the staining can also be done by chemically changing the horny layer of the skin with so-called self-tanning preparations.
  • the most important active ingredient is dihydroxyacetone (DHA).
  • DHA dihydroxyacetone
  • the skin tanning achieved in this way cannot be washed off and is only removed with the normal desquamation of the skin (after approx. 10-15 days).
  • Dihydroxyacetone can be called ketotriose and reacts as a reducing sugar with the amino acids of the skin or the free amino and imino groups of keratin via a series of intermediates in the sense of a Maillard reaction to brown-colored substances, so-called melanoids, which occasionally also melanoidins to be named.
  • a disadvantage of tanning with dihydroxyacetone is that the skin tanned with it, in contrast to "sun-tanned" skin, is not protected against sunburn.
  • dihydroxyacetone Another disadvantage of dihydroxyacetone is that, especially under the influence of ultraviolet radiation, it releases formaldehyde, albeit in mostly small amounts. It was therefore an urgent need to have ways in which the decomposition of dihydroxyacetone can be effectively countered.
  • Another type of artificial tanning which is also completely independent of UV light, can be brought about by the hormones, which are also released in the body as a result of (natural) UV radiation and ultimately stimulate the melanocytes to synthesize melanin.
  • proopiomelanocortin POMC
  • aMSH proopiomelanocortin
  • synthetic variants such as NDP
  • these hormones can generally bring about a tan, their use in cosmetics is forbidden, since they are clearly pharmacologically active substances (hormones) that should not be used widely without medical indication.
  • the object of the present invention was therefore to remedy the disadvantages of the prior art.
  • the present invention uses physiological processes (enhanced synthesis of melanin) of the skin in order to obtain the desired tanning of the skin and thereby improves the skin's own protection (various protective functions of melanin).
  • the skin's own tanning can of course be activated with and without the involvement of UV light.
  • Purines represent a group of important compounds which are widespread in nature and involved in human, animal, plant and microbial metabolic processes, which are derived from the basic body of purine by substitution with OH, NH 2 , SH in 2-, 6- and. Derive 8-position and / or with CH 3 in 1-, 3-, 7-position.
  • the purines are biosynthesized at the nucleotide level from glycine and CO 2 and small molecular fragments of L-glutamine, L-aspartic acid and 10-formyltetrahydrofolic acid. Purine bases are released in the metabolism, which are partially recycled in the cells, ie converted into each other.
  • the most important purines include adenine and guanine, which - together with the pyrimidines uracil, thymine and cytosine - are components of the nucleic acids, hypoxanthine, xanthine and uric acid as metabolites of humans and animals as well as the vegetable, often as purine Alkaloids called purines caffeine, theobromine and theophylline, which are found in coffee, cocoa and tea.
  • Plant growth substances to be counted among the purines are zeatin and kinetin (cytokines).
  • cytokines kinetin
  • the innards, especially sweetbreads (thymus) are rich in purines, and fish and green peas also contain a lot.
  • Pyrimidines in the sense of the present invention are the derivatives of pyrimidine i
  • cytosine and thymine are counterpart of adenine and guanine.
  • the role of cytosine in ribnoucleic acid is taken over by uracil.
  • one or more substances selected from the group of pyrimidines and purines increase the activity of the melanocytes in human skin and thus also the melanogenesis as a physiological process and thereby increase the natural tanning of the skin.
  • Skin care products according to the invention advantageously contain 0.0001-20 percent by weight of one or more substances selected from the group of pyrimidines and purines, preferably purine and / or uracil and / or thymine and / or adenine and / or guanine and / or cytosine.
  • Cosmetic or dermatological preparations according to the invention preferably contain 0.001-10% by weight of one or more substances, selected from the group of pyrimidines and purines, based on the total composition of the preparations.
  • Cosmetic or dermatological preparations according to the invention very particularly preferably contain 0.01-1% by weight of one or more substances selected from the group of pyrimidines and purines, based on the total composition of the preparations.
  • the cosmetic and / or dermatological light protection formulations can be composed as usual and serve the cosmetic and / or dermatological light protection, furthermore for the treatment, care and cleaning of the skin and / or hair and as a make-up product in decorative cosmetics.
  • the cosmetic and dermatological preparations according to the invention are applied to the skin and / or the hair in a sufficient amount in the manner customary for cosmetics.
  • Those cosmetic and dermatological preparations which are in the form of a sunscreen are particularly preferred. These can advantageously also have at least one further UVA filter and / or at least one further UVB filter and / or contain at least one inorganic pigment, preferably an inorganic micro-pigment.
  • cosmetic and dermatological preparations according to the invention are able to prolong the natural tanning process.
  • cosmetic and dermatological formulations according to the invention are able to serve for the treatment of hypopigmentation (vitiligo, uneven pigmentation in aging skin, etc.).
  • the cosmetic and dermatological preparations can contain cosmetic auxiliaries as are usually used in such preparations, e.g. Preservatives, bactericides, perfumes, substances to prevent foaming, dyes, pigments that have a coloring effect, thickeners, moisturizing and / or moisturizing substances, fats, oils, waxes or other usual components of a cosmetic or dermatological formulation such as alcohols, Polyols, polymers, foam stabilizers, electrolytes, organic solvents or silicone derivatives.
  • cosmetic auxiliaries e.g. Preservatives, bactericides, perfumes, substances to prevent foaming, dyes, pigments that have a coloring effect, thickeners, moisturizing and / or moisturizing substances, fats, oils, waxes or other usual components of a cosmetic or dermatological formulation such as alcohols, Polyols, polymers, foam stabilizers, electrolytes, organic solvents or silicone derivatives.
  • antioxidants are generally preferred. According to the invention, all the antioxidants suitable or customary for cosmetic and / or dermatological applications can be used as favorable antioxidants.
  • antioxidants are advantageously selected from the group consisting of amino acids (eg glycine, histidine, tyrosine, tryptophan) and their derivatives, imidazoles (eg urocanic acid) and their derivatives, peptides such as D, L-carnosine, D-camosine, L- Carosin and its derivatives (eg anserine), carotenoids, carotenes (eg ⁇ -carotene, ⁇ -carotene, lycopene) and their derivatives, chlorogenic acid and their derivatives, lipoic acid and their derivatives (eg dihydroliponic acid), aurothioglucose, propylthiouracil and other thiols (e.g.
  • amino acids eg glycine, histidine, tyrosine, tryptophan
  • imidazoles eg urocanic acid
  • peptides such as D, L-carnosine, D-camosine
  • thioredoxin glutathione, cysteine, cystine, cystamine and their glycosyl, N-acetyl, methyl, ethyl, propyl, amyl, butyl and lauryl, palmitoyl, oleyl, ⁇ -linoleyl, Cholesteryl and glyceryl esters) and their salts, dilauryl thio dipropionate, distearyl thio dipropionate, thiodipropionic acid and their derivatives (esters, ethers, peptides, lipids, nucleotides, nucleosides and salts) as well as sulfoximine compounds (e.g.
  • buthionine sulfoximines in very low tolerable doses (e.g. pmol to ⁇ mol / kg), also (metal) chelators (e.g. ⁇ -hydroxy fatty acids, palmitic acid, phytic acid, lactoferrin), ⁇ -hydroxy acids (e.g.
  • Citric acid lactic acid, malic acid
  • humic acid bile acid, bile extracts, bilirubin, biliverdin, EDTA, EGTA and their derivatives
  • unsaturated fatty acids and their derivatives eg ⁇ -linolenic acid, linoleic acid, oleic acid
  • folic acid and their derivatives ubiquinone and ubiquinol and their derivatives
  • vitamin C and derivatives e.g. ascorbyl palmitate, Mg ascorbyl phosphate, ascorbyl acetate
  • tocopherols and derivatives e.g.
  • vitamin E acetate
  • vitamin A and derivatives vitamin A palmitate
  • coniferyl benzoate of benzoin, rutinic acid and their Derivatives -Glycosylrutin, Ferulaklare, Furfurylidenglucitol, Carnosin, Butylhydroxytoluol, Butylhydroxyanisol, Nordihydroguajakharzäure, Nordihydroguajaretklare, Trihydroxybutyroph enone, uric acid and its derivatives, mannose and its derivatives, zinc and its derivatives (e.g. ZnO, ZnSO 4 ) selenium and its derivatives (e.g.
  • stilbenes and their derivatives e.g. stilbene oxide, trans-stilbene oxide
  • derivatives suitable according to the invention Salts, esters, ethers, sugars, nucleotides, nucleosides, peptides and lipids
  • the amount of the aforementioned antioxidants (one or more compounds) in the preparations is preferably 0.001 to 30% by weight, particularly preferably 0.05-20% by weight, in particular 1-10% by weight, based on the total weight of the Preparation.
  • vitamin E and / or its derivatives represent the antioxidant (s)
  • vitamin A or vitamin A derivatives or carotenes or their derivatives represent the antioxidant or antioxidants, it is advantageous to use their respective concentrations in the range from 0.001-10% by weight, based on the total weight of the formulation, to choose.
  • the lipid phase can advantageously be selected from the following group of substances: mineral oils, mineral waxes
  • Oils such as triglycerides of capric or caprylic acid, but preferably castor oil; Fats, waxes and other natural and synthetic fat bodies, preferably esters of fatty acids with alcohols with a low C number, for example with isopropanol, propylene glycol or glycerol, or esters of fatty alcohols with alkanoic acids with a low C number or with fatty acids; benzoates;
  • Silicone oils such as dimethylpolysiloxanes, diethylpolysiloxanes, diphenylpolysiloxanes and mixed forms thereof.
  • the oil phase of the emulsions, oleogels or hydrodispersions or lipodispersions for the purposes of the present invention is advantageously selected from the group of esters from saturated and / or unsaturated, branched and / or unbranched alkane carboxylic acids with a chain length of 3 to 30 carbon atoms and saturated and / or unsaturated, branched and / or unbranched alcohols with a chain length of 3 to 30 carbon atoms, from the group of esters of aromatic carboxylic acids and saturated and / or unsaturated, branched and / or unbranched alcohols with a chain length of 3 to 30 carbon atoms.
  • ester oils can then advantageously be selected from the group of isopropyl myristate, isopropyl palmitate, isopropyl stearate, isopropyl oleate, n-butyl stearate, n-hexyl laurate, n-decyl oleate, isooctyl stearate, isononyl stearate, isononylisononanoate, 2-ethylhexyl ethylhexyl palmitate 2-octyldodecyl palmitate, oleyl oleate, olerlerucate, erucyl oleate, erucylerucate and synthetic, semisynthetic and natural mixtures of such esters, for example Jojoba oil.
  • the oil phase can advantageously be selected from the group of branched and unbranched hydrocarbons and waxes, the silicone oils, the dialkyl ethers, the group of saturated or unsaturated, branched or unbranched alcohols, and also the fatty acid triglycerides, especially the triglycerol esters of saturated and / or unsaturated, branched and / or unbranched alkane carboxylic acids with a chain length of 8 to 24, in particular 12 - 18 carbon atoms.
  • the fatty acid triglycerides can, for example, advantageously be selected from the group of synthetic, semisynthetic and natural oils, e.g. Olive oil, sunflower oil, soybean oil, peanut oil, rapeseed oil, almond oil, palm oil, coconut oil, palm kernel oil and the like.
  • any mixtures of such oil and wax components can also be used advantageously for the purposes of the present invention. It can also be advantageous if necessary be to use waxes, for example cetyl palmitate, as the sole lipid component of the oil phase.
  • the oil phase is advantageously selected from the group consisting of 2-ethylhexyl isostearate, octyldodecanol, isotridecyl isononanoate, isoeicosane, 2-ethylhexyl cocoate, C 12 -i 5 -alkyl benzoate, caprylic capric acid triglyceride, dicaprylyl ether.
  • hydrocarbons paraffin oil, squalane and squalene can be used advantageously for the purposes of the present invention.
  • the oil phase can advantageously also have a content of cyclic or linear silicone oils or consist entirely of such oils, although it is preferred to use an additional content of other oil phase components in addition to the silicone oil or the silicone oils.
  • Cyclomethicone (octamethylcyclotetrasiloxane) is advantageously used as the silicone oil to be used according to the invention.
  • other silicone oils can also be used advantageously for the purposes of the present invention, for example hexamethylcyclotrisiloxane, polydimethylsiloxane, poly (methylphenylsiloxane).
  • Alcohols, diols or polyols of low C number, and their ethers preferably ethanol, isopropanol, propylene glycol, glycerin, ethylene glycol, ethylene glycol monoethyl or monobutyl ether, propylene glycol monomethyl, monoethyl or monobutyl ether, diethylene glycol monomethyl or monoethyl ether and analogous products, furthermore low C-number alcohols, for example ethanol, isopropanol, 1, 2-propanediol, glycerol and in particular one or more thickeners, which or which can advantageously be chosen from the group silicon dioxide, aluminum silicates, polysaccharides or their derivatives, for example hyaluronic acid, xanthan gum, hydroxypropylmethyl cellulose, particularly advantageously from the group of polyacrylates, preferably a polyacrylate from the group of so-called carbopols, for example carbopoles Types 980, 981, 13
  • Preparations according to the invention can also advantageously contain substances which absorb UV radiation in the UVB range, the total amount of filter substances e.g. 0.1% by weight to 30% by weight, preferably 0.5 to 10% by weight, in particular 1.0 to 6.0% by weight, based on the total weight of the preparations, in order to prepare cosmetic preparations To provide that protect the hair or skin from the entire range of ultraviolet radiation. They can also serve as a sunscreen for the hair.
  • the total amount of filter substances e.g. 0.1% by weight to 30% by weight, preferably 0.5 to 10% by weight, in particular 1.0 to 6.0% by weight, based on the total weight of the preparations, in order to prepare cosmetic preparations To provide that protect the hair or skin from the entire range of ultraviolet radiation. They can also serve as a sunscreen for the hair.
  • UVB filter substances if they contain UVB filter substances, they can be oil-soluble or water-soluble.
  • Oil-soluble UVB filters which are advantageous according to the invention are, for example:
  • 4-aminobenzoic acid derivatives preferably 4- (dimethylamino) benzoic acid (2-ethylhexyl) ester, 4- (dimethylamino) benzoic acid amyl ester;
  • Esters of cinnamic acid preferably 4-methoxycinnamic acid (2-ethylhexyl) ester, 4-methoxycinnamic acid isopentyl ester;
  • esters of salicylic acid preferably salicylic acid (2-ethylhexyl) ester, salicylic acid (4-isopropylbenzyl) ester, salicylic acid homomethyl ester,
  • Esters of benzalmalonic acid preferably 4-methoxybenzalmalonic acid di (2-ethylhexyl) ester,
  • UVB filters examples include Salts of 2-phenylbenzimidazo! -5-sulfonic acid such as its sodium, potassium or triethanolammonium salt, and also the sulfonic acid itself;
  • Sulfonic acid derivatives of benzophenones preferably 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid and its salts;
  • Sulfonic acid derivatives of 3-benzylidene camphor e.g. 4- (2-oxo-3-bomylidene-methyl) benzenesulfonic acid, 2-methyl-5- (2-oxo-3-bornylidene-methyl) sulfonic acid and their salts as well as 1,4-di (2-oxo-10-sulfo 3-bornylidene methyl) -benzene and its salts (the corresponding 10-sulfato compounds, for example the corresponding sodium, potassium or triethanolammonium salt), also as benzene-1,4-di (2-oxo-3-bornylidene methyl) Designated 10-sulfonic acid
  • UVB filters which can be used in combination with the active compound combinations according to the invention, is of course not intended to be limiting.
  • UVA filters that are usually contained in cosmetic preparations.
  • These substances are preferably derivatives of dibenzoylmethane, in particular 1 - (4'-tert-butylphenyl) -3- (4'-methoxyphenyl) propane-1, 3-dione and 1-phenyl-3- (4 '-isopropylphenyl) propane-1,3-dione.
  • the quantities used for the UVB combination can be used.
  • the total amount of dibenzoylmethanes, in particular 4- (tert-butyl) -4'-methoxydibenzoylmethane in the finished cosmetic or dermatological preparations is advantageously in the range from 0.1 to 10.0% by weight, preferably 0.5 - 6.0% by weight, based on the total weight of the preparations.
  • the total amount of camphor derivatives, in particular 4-methylbenzylidene camphor and or benzylidene camphor, in the finished cosmetic or dermatological preparations is advantageously in the range from 0.1 to 10.0% by weight, preferably 0.5 to 6.0% by weight selected, based on the total weight of the preparations.
  • the total amount of triazine derivatives, in particular 4,4 ', 4 "- (1,3,5-triazine-2,4,6-triyltrimino) tris benzoic acid tris (2-ethylhexyl ester), in the finished cosmetic or dermatological preparations are advantageously selected from the range from 0.1 to 10.0% by weight, preferably 0.5 to 6.0% by weight, based on the total weight of the preparations.
  • Cosmetic and dermatological preparations according to the invention also advantageously, although not necessarily, contain inorganic pigments based on metal oxides and / or other metal compounds which are sparingly soluble or insoluble in water, in particular the oxides of titanium (TiO 2 ), zinc (ZnO), iron (for example Fe 2 O 3 ), zirconium (ZrO 2 ), silicon (SiO 2 ), manganese (e.g. MnO), aluminum (Al 2 O 3 ), cerium (e.g. Ce 2 O 3 ), mixed oxides of the corresponding metals and mixtures of such oxides. Pigments based on TiO 2 are particularly preferred.
  • the inorganic pigments are present in hydrophobic form, that is to say that they have been treated to be water-repellent on the surface.
  • This surface treatment can consist in that the pigments are provided with a thin hydrophobic layer by methods known per se.
  • One such method is, for example, that the hydrophobic surface layer after a reaction
  • n and m are stoichiometric parameters to be used at will, R and R 'are the desired organic radicals.
  • hydrophobized pigments shown in analogy to DE-OS 33 14 742 are advantageous.
  • TiO 2 pigments are available, for example, from Degussa under the trade names T 805.
  • the total amount of inorganic pigments, in particular hydrophobic inorganic micropigments in the finished cosmetic or dermatological preparations, is advantageously in the range from 0.1 to 30% by weight, preferably 0.1 to 10.0, in particular 0.5 to 6.0 % By weight, based on the total weight of the preparations. It may also be advantageous according to the invention to provide the preparations with further UVA and / or UVB filters, for example certain silicic acid derivatives such as
  • the total amount of one or more salicylic acid derivatives in the finished cosmetic or dermatological preparations is advantageously selected from the range from 0.1 to 15.0% by weight, preferably 0.5 to 8.0% by weight, based on the total weight of the preparations. If ethylhexyl salicylate is chosen, it is advantageous to choose its total amount from the range of 0.1-5.0% by weight, preferably 0.5-2.5% by weight. If homomethyl salicylate is chosen, it is advantageous to choose its total amount from the range 0.1-10.0% by weight, preferably 0.5-5.0% by weight.
  • Yet another additional light protection filter substance to be used advantageously according to the invention is ethylhexyl-2-cyano-3,3-diphenylacrylate (octocrylene), which is available from BASF under the name UVINUL® N 539 and is characterized by the following structure:

Abstract

L'invention concerne l'utilisation d'une ou de plusieurs substances, sélectionnées dans le groupe des pyrimidines et des purines pour produire des préparations cosmétiques ou dermatologiques visant à renforcer le hâle naturel ou pour stimuler la mélanogenèse de la peau chez l'homme.
EP02782834A 2001-10-11 2002-10-04 Utilisation d'une ou de plusieurs substances selectionnees dans le groupe des pyrimidines ou des purines dans des preparations cosmetiques pour haler la peau Withdrawn EP1438011A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10150412A DE10150412A1 (de) 2001-10-11 2001-10-11 Verwendung einer oder mehreren Substanzen, gewählt aus der Gruppe der Pyrimidine und Purine in kosmetischen Zubereitungen zur Bräunung der Haut
DE10150412 2001-10-11
PCT/EP2002/011157 WO2003032940A1 (fr) 2001-10-11 2002-10-04 Utilisation d'une ou de plusieurs substances selectionnees dans le groupe des pyrimidines ou des purines dans des preparations cosmetiques pour haler la peau

Publications (1)

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EP1438011A1 true EP1438011A1 (fr) 2004-07-21

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EP02782834A Withdrawn EP1438011A1 (fr) 2001-10-11 2002-10-04 Utilisation d'une ou de plusieurs substances selectionnees dans le groupe des pyrimidines ou des purines dans des preparations cosmetiques pour haler la peau

Country Status (4)

Country Link
US (1) US7270804B2 (fr)
EP (1) EP1438011A1 (fr)
DE (1) DE10150412A1 (fr)
WO (1) WO2003032940A1 (fr)

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WO2003032940A1 (fr) 2003-04-24
DE10150412A1 (de) 2003-04-17
US20040265250A1 (en) 2004-12-30
US7270804B2 (en) 2007-09-18

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