WO2021138824A1 - Composition nettoyante cosmétique - Google Patents

Composition nettoyante cosmétique Download PDF

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Publication number
WO2021138824A1
WO2021138824A1 PCT/CN2020/070802 CN2020070802W WO2021138824A1 WO 2021138824 A1 WO2021138824 A1 WO 2021138824A1 CN 2020070802 W CN2020070802 W CN 2020070802W WO 2021138824 A1 WO2021138824 A1 WO 2021138824A1
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Prior art keywords
weight
composition
composition according
peg
ethoxylated
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PCT/CN2020/070802
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English (en)
Inventor
Dan KE
Ziyin WANG
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Beiersdorf Daily Chemical (Wuhan) Co., Ltd.
Beiersdorf Ag
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Priority to PCT/CN2020/070802 priority Critical patent/WO2021138824A1/fr
Publication of WO2021138824A1 publication Critical patent/WO2021138824A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04—Dispersions; Emulsions
    • A61K8/046—Aerosols; Foams
    • 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
    • A61K8/37—Esters of carboxylic acids
    • A61K8/375—Esters of carboxylic acids the alcohol moiety containing more than one hydroxy group
    • 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
    • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives 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
    • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
    • A61K8/466—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfonic acid derivatives; Salts
    • 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
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/86—Polyethers
    • 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
    • A61Q19/10—Washing or bathing preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/59—Mixtures
    • A61K2800/596—Mixtures of surface active compounds

Definitions

  • the present invention belongs to the cosmetic field, and relates to a foamable cleansing composition, especially a face cleansing composition.
  • the composition has effective cleansing properties and at the same time is a mild, non-irritating composition.
  • the composition is made available in form of a mousse.
  • Cleansing compositions in form of a self-foaming cleanser are very popular today, especially in Asian countries.
  • cleansing products are supposed to cleanse the skin and hair.
  • Cleansing products for the skin are primarily used to remove dirt from the skin surface.
  • External solid or liquid components which come into contact with the skin and are deposited thereupon or components applied to the skin, for instance as make-up, are part of the dirt on the skin, which is to be removed.
  • the dirt on the skin also includes excess skin lipids and dead cells.
  • Cleansing compositions intended for face cleansing have to meet special requirements. As the skin of the face is a very sensitive part of the skin, the eye area and the eyes being even more sensitive, cleansing compositions for face cleansing have to be compatible to the skin of the face and the eyes. Furthermore, the compositions have to be distributed on the skin easily, without the necessity of intense rubbing, which may lead to skin irritations.
  • a cleansing composition in form of a foam may be provided.
  • US 2006/0019844 A1 describes a foaming cleansing composition, which is as gentle as a non-foaming composition; the composition comprises a surfactant system containing alkyl glycol carboxylic acids and their salts and alkyl betaines.
  • US 7,488,709 B2 discloses a cleansing composition in form of an aerosol foam.
  • the composition comprises alkyl amphoacetates and glycerolated esters of polyethylene glycol.
  • Cleansing foams may be made available upon release from a pressurized container; examples for such kinds of cleansing foams are described in WO 2018/086790 A1; EP 3329902 A1, EP 3329903 A1, and WO 2018/172315 A1.
  • soap may be defined as water soluble sodium or potassium salts of saturated or unsaturated fatty acids with 10 or more carbon atoms.
  • the soaps help to produce a stable and thick foam.
  • the feeling of the skin is a squeaky one, leaving the skin dulled.
  • the cleansing compositions in form of a foam cleanser. It is desirable to provide a mild composition, which upon release from the packaging device generates a stable and thick foam. Moreover, the composition shall care the skin, so that after using the inventive cleansing mousse the skin does not feel tight and/or squeaky and the skin is not dry.
  • EP 1725213 A1 discloses a mild shampoo containing a hydroxyl sultaine surfactant.
  • CN 103976940 A describes a mild cleansing foam containing besides a considerable amount of sodium cocoyl laureth sulfate Cocamidopropyl hydroxyl sultaine and sodium lauroyl oat amino acid.
  • the composition according to CN 103976940 A is intended to cleanse skin having a wound.
  • a cosmetic cleansing composition especially a cosmetic cleansing mousse, releasable as a foam containing
  • a surfactant system comprising at least one amino acid based surfactant and at least one sultaine
  • an emulsifier system comprising at least one ethoxylated fatty alcohol, especially one having from 8 to 24 carbon atoms and at least one ester of ethoxylated glycerine and fatty acids could bring about the desired improvements.
  • the composition contains water, hence it is an aqueous composition.
  • the water content ranges from 60 to 98 %by weight, preferably 65 to 95 %by weight, more preferably 70 to 90 %by weight, in relation to the total weight of the composition.
  • composition according to the invention is a cosmetic composition intended to cleanse human skin, especially the skin of the face.
  • a further object of the invention is a cosmetic product comprising
  • a packaging device wherein the packaging device is a pump dispenser
  • a surfactant system comprising at least one amino acid based surfactant and at least one sultaine
  • an emulsifier system comprising at least one ethoxylated fatty alcohol, especially one having at least 8 carbon atoms and at least one ester of ethoxylated glycerine and fatty acids,
  • a further object of the invention is a cosmetic product comprising
  • packaging device is an aerosol spraying device
  • a surfactant system comprising at least one amino acid based surfactant and at least one sultaine
  • an emulsifier system comprising at least one ethoxylated fatty alcohol, especially one having at least 8 carbon atoms and at least one ester of ethoxylated glycerine and fatty acids, and
  • a further object of the present invention is the use of the surfactant system comprising at least one amino acid based surfactant and at least one sultaine in a composition as specified above to generate a high amount of foam.
  • Still a further object is the use of an emulsifier system comprising at least one ethoxylated fatty alcohol, especially one having at least 8 carbon atoms and at least one ester of ethoxylated glycerine and fatty acids in a composition as specified above to generate a thick and stable foam.
  • a further object is the use of a surfactant system comprising at least one amino acid based surfactant and at least one sultaine and an emulsifier system comprising at least one ethoxylated fatty alcohol, especially one having at least 8 carbon atoms and at least one ester of ethoxylated glycerine and fatty acids in a composition as specified above to generate a high amount of thick and stable foam.
  • composition according to the invention contains a surfactant system comprising at least one amino acid based surfactant and at least one alkyl hydroxy sultaine. Said surfactants are essential for the formation of a high amount of foam, which is thick and stable.
  • amino acid based surfactants may be classified as anionic surfactants.
  • amino acid based surfactants are acyl amino acids (and their physiologically suitable salts) , examples being presented in the following listing:
  • acyl peptides for example, palmitoyl-hydrolyzed milk protein, sodium cocoyl-hydrolyzed soy protein, and sodium/potassium cocoyl-hydrolyzed collagen,
  • ⁇ sarcosinates for example, myristoyl sarcosine, TEA-lauroyl sarcosinate, sodium lauroyl sarcosinate, and sodium cocoyl sarcosinate,
  • the at least one amino acid based surfactant is chosen from N-acyl glycinates, more preferably sodium acyl glycinates, most preferably sodium cocoyl glycinate.
  • Sodium cocoyl glycinate may be purchased from Clariant under the trade name Hostapon SG.
  • the at least one amino acid based surfactant is contained in a total amount of 1 to 25 %by weight, preferably 5 to 20 %by weight, more preferably 8 to 12 %by weight in the composition according to the invention, in relation to the total weight of the composition.
  • Sultaines As sultaines have a positive and a negative charge, they may be classified as zwitterionic or amphoteric surfactants. Sultaines may be represented by the following general formula:
  • R is an alkyl residue, especially one having 8 or more carbon atoms.
  • Hydroxysultaine also belonging to the surfactant class of the sultaines, may be described by the following formula:
  • R is an alkyl residue, especially one having 8 or more carbon atoms.
  • amidopropyl hydroxyl sultaines which also belong to the group of sultaines, may be represented by the following formula:
  • R is an alkyl residue, especially one having 8 or more carbon atoms.
  • the at least one sultaine is chosen from alkyl hydroxyl sultaines having alkyl residues of at least 8 carbon atoms, more preferably lauryl hydroxyl sultaine, which may be purchased from Kao under the trade name of Amphitol 20HD.
  • the at least one sultaine is contained in a total amount of 0.5 to 20 %by weight, preferably 1 to 10 %by weight, more preferably 2 to 5 %by weight in the composition according to the invention, in relation to the total weight of the composition.
  • the composition contains sodium cocoyl glycinate and lauryl hydroxyl sultaine.
  • the surfactant system is consisting of sodium cocoyl glycinate and lauryl hydroxyl sultaine.
  • composition according to the invention contains an emulsifier system comprising at least one ethoxylated fatty alcohol having from 8 to 24 carbon atoms and at least one ester of ethoxylated glycerine and fatty acids. Said emulsifiers contribute to the formation of a thick and stable foam.
  • Emulsifiers help to combine two immiscible liquids (for example oil in water) in a way to result in a stable preparation, an emulsion. For that reason emulsifiers have to have an amphiphilic character, the hydrophobic part interacts with the oily or lipid phase and the hydrophilic part interacts with the aqueous phase. By stirring or homogenizing the generated droplets are dispersed in the respective environment, namely aqueous droplets in a lipid environment or lipid droplets in an aqueous environment. Primarily, emulsifiers do not have a detersive, surfactant character.
  • Emulsifiers reduce the interfacial tension between the two phases and, besides reducing the interfacial work, also achieve a stabilization of the emulsion formed. They stabilize the formed emulsion by means of interfacial films, as well as by forming steric or electrical barriers, as a result of which the merging (coalescence) of the emulsified particles is prevented.
  • HLB values are suitable to characterize emulsifiers, said values specify the hydrophilicity of a given emulsifier.
  • the HLB value may be determined by the following formula:
  • HLB 20 ⁇ (1-M lipophile /M)
  • M lipophile represents the molar mass of the lipophilic fraction of a given emulsifier and M represents the molar mass of the total emulsifier.
  • emulsifiers with an HLB value up to about 8 are considered to be W/O-emulsifiers, whereas emulsifiers having HLB values greater than 8 are effective as O/W-emulsifiers.
  • At least one emulsifier is chosen from O/W-emulsifiers, which are ethoxylated fatty alcohols having from 8 to 18 carbon atoms.
  • O/W-emulsifiers which are ethoxylated fatty alcohols having from 8 to 18 carbon atoms.
  • said emulsifiers are Laureth-8, Laureth-10, Laureth-12, Laureth-20, Trideceth-8, Trideceth-9, Trideceth-10, Trideceth-12, Trideceth-20, Ceteth-10, Ceteth-12, Ceteth-20, Ceteth-30, Laureth-23, and mixtures thereof. It is preferred if in the composition of the present invention Laureth-23 is contained.
  • the at least one ethoxylated fatty alcohol having from 8 to 18 carbon atoms is contained in a total amount of 0.1 to 10 %by weight, preferably 0.2 to 8 %by weight, more preferably 0.5 to 3.0 %by weight in the composition according to the invention, in relation to the total weight of the composition.
  • At least one emulsifier is chosen from O/W-emulsifiers, which are esters of ethoxylated glycerine and fatty acids.
  • the esters are triesters of ethoxylated glycerine, but diesters and monoesters are also suitable.
  • the degree of ethoxylation ranges from 10 to 200 mol of ethylene oxide per mol glycerine. These values are indicating average values.
  • the fatty acids may be chosen from saturated or unsaturated, branched or unbranched and/or hydroxylated fatty acids.
  • O/W-emulsifiers being esters of ethoxylated glycerine and fatty acids may be chosen from PEG-25 glyceryl trioleate, PEG-15 glyceryl ricinoleate, PEG-20 glyceryl isostearate, PEG-20 glyceryl oleate, PEG-30 glyceryl isostearate, PEG-20 glyceryl laurate, PEG-30 glyceryl stearate, PEG-30 glyceryl laurate, PEG-20 glyceryl stearate, PEG-60 glyceryl isostearate and PEG-90 glyceryl isosterate.
  • the at least one ester of ethoxylated glycerine and fatty acids is chosen from esters being esterification products of fatty acids having 8 to 24 carbon atoms, more preferably of saturated and branched fatty acids having 12 to 20 carbon atoms. It is most preferred, if the ester of ethoxylated glycerine and fatty acids is PEG-90 glyceryl isostearate, which may be purchased from Zschimmer &Schwarz GmbH &Co. KG under the trade name Oxetal VD 92.
  • the at least one ester of ethoxylated glycerine and fatty acids is contained in a total amount of 0.1 to 10 %by weight, preferably 0.2 to 6 %by weight, more preferably 0.5 to 3.0 %by weight in the composition according to the invention, in relation to the total weight of the composition.
  • the composition contains Laureth-23 and PEG-90 glyceryl isosterate.
  • the emulsifier system is consisting of Laureth-23 and PEG-90 glyceryl isosterate.
  • the surfactant system is consisting of sodium lauroyl glycinate and lauryl hydroxyl sultaine and referring to the emulsifier system, the emulsifier system is consisting of Laureth-23 and PEG-90 glyceryl isosterate.
  • the composition according to the invention is an aqueous composition. Nevertheless it is advantageous, if hydrophobic components are contained. For instance, these hydrophobic components may be perfumes and/or certain preservatives.
  • additional emulsifiers or additional substances having emulsifying properties are contained. It is preferred, if said emulsifier or substances having emulsifying properties have ethylene oxide units. It is more preferred, if the additional emulsifier or additional substance having emulsifying properties is PEG-40 Hydrogenated Castor oil.
  • the one or more additional emulsifier (s) is/are contained in a total amount of 0.1 to 5.0 %by weight, preferably 0.5 to 3.0 %by weight in the composition according to the invention, in relation to the total weight of the composition.
  • composition according to the present invention contains preservatives. All preservatives, which are allowed and suitable for cosmetic compositions may be contained in the composition according to the invention.
  • parabens are characterized by the following formula
  • R is a linear or branched alkyl residue of 1 to 5 carbon atoms.
  • Common parabens are methyl-, ethyl-, propyl-, butylparaben, as well as isopropyl-, isobutyl-, pentyl-, and phenylparaben. It is more preferred, if methyl-and/or ethylparaben are contained.
  • the one or more paraben (s) is/are contained in a total amount of 0.01 to 2.0 %by weight, preferably 0.05 to 1.0 %by weight by weight in the composition according to the invention, in relation to the total weight of the composition.
  • Phenoxyethanol is contained in the composition according to the invention.
  • Phenoxyethanol is contained in an amount of 0.01 to 5.0 %by weight, preferably 0.05 to 3.0 %by weight, more preferably 0.1 to 0.9 %by weight in the composition according to the invention, in relation to the total weight of the composition.
  • the pH value of the composition according to the invention ranges from 6.4 to 9.5, preferably 7.5 to 8.5.
  • the pH value may be adjusted by any physiologically acceptable means. However, it is preferred to use organic acids, selected from citric acid and/or lactic acid, more preferred citric acid to adjust the pH value.
  • the composition according to the invention is a foamable composition, which is provided in form of a mousse.
  • the composition is contained in a packaging device, which is suited to provide the composition in form of a mousse upon removal from the packaging device.
  • the foamable composition according to the invention can advantageously be removed from pump atomizers (pump dispensers) which are free from propellant gas and are operated mechanically.
  • pump atomizers pump dispensers
  • pump systems which operate without compressed gas, but with a filter which brings about specific swirling movements.
  • foamable composition according to the invention together with a propellant gas or a mixture of propellant gases can advantageously be removed from an aerosol spraying device.
  • Aerosol spraying devices may be aerosol containers with a filling of the liquid or slurry-like substances, which are under the pressure of a propellant.
  • Containers of this type may be equipped with dispensers, containing valves and spray heads of very diverse constructions, which allow the contents to be removed as a foam.
  • Suitable pressurized gas containers for the purpose of the present invention are primarily cylindrical vessels made of metal (aluminum, tinplate, contents ⁇ 1000 ml) , protected or shatter-resistant glass or plastic (contents ⁇ 220 ml) or shattering glass or plastic (contents ⁇ 150 ml) , in the choice of which compressive strength and breaking strength, corrosion resistance, ease of filling, or ease of sterilizing etc., but also esthetic aspects, manageability, printing properties etc. play a role.
  • the maximum permissible operating pressure of spray cans made of metal at 50°C is 12 bar and the maximum fill volume at this temperature is about 90%of the total volume.
  • the values for the operating pressure are lower and dependent on the size of the container and the propellant (whether liquefied, compressed or dissolved gas) .
  • cans made of tinplate or aluminum are particularly advantageous.
  • metal cans can be coated on the inside (silver-or gold-coated) , for which purpose all standard commercial internal protective coatings are suitable.
  • Film laminates made of polyethylene (PE) , polypropylene (PP) and/or polyethylene terephthalate (PET) on the inside of the cans are also advantageous, in particular for cans made of tinplate.
  • the pressurized gas containers are usually single-part or two-part, but in most cases three-part cylindrical, conical or differently shaped. If plastics are used as the spray container materials, then these should be resistant to chemicals and the sterilization temperature, gas-tight, impact-resistant and stable to internal pressures in excess of 12 bar. In principle, polyacetals and polyamides are suitable for spray container purposes.
  • the internal construction of the spray cans and the valve construction are very varied, depending on the intended use and the physical nature of the ingredient, e.g. whether it is in the form of a two-phase or three-phase system and can be determined by the person skilled in the art by simple exploratory investigations without inventive activity.
  • suitable variants reference may be made to the "Aerosol Technologie Handbuch der Aerosol-Verpackung" (Wolfgang Tauscher, Melcher Verlag GmbH Heidelberg/Munich, 1996) .
  • Valves which are advantageous according to the invention, may be designed with or without dip tube.
  • tinplate uncoated, gold-or clear-coated, film-laminated (PE, PP or PET) aluminum: uncoated, silver-or gold-coated, different coating variants, Stoner-Mudge design;
  • ⁇ Gasket natural or synthetic elastomers or thermoplastic (sleeve gaskets, film-lined made of PE or PP) internal and external seals, e.g. made of perbunan, buna, neoprene, butyl, CLB, LDPE, viton, EPDM, chlorobutyl, bromobutyl and/or diverse compounds;
  • ⁇ Cone PA, POM, brass and diverse special materials, standard bores (e.g.: 0.25 to 0.70 mm or 2 ⁇ 0.45 to 2 x 1.00 mm) , various shaft diameters;
  • ⁇ Spring metal, particularly preferably V2A, stainless steel; plastic and also elastomer;
  • ⁇ Housing standard and impact VPH bores, RPT bores or slit for upside-down applications materials: e.g. polyacetal, PA, PE, POM and the like;
  • ⁇ Dip tube plastic (polymer resin) , e.g. PE, PP, PA or polycarbonate.
  • Advantageous spray heads for the purposes of the present invention are, for example, foaming heads for upright use (hold can vertically) .
  • the dispenser comprising a valve and a spray head is an essential part in forming distinct objects of foam.
  • a suitable dispenser may be purchased from Guangdong Neat Packaging Co., Ltd.
  • the dispenser has to contain a device, which enables the formation of a distinct object of foam.
  • the device of a dispenser enabling the formation of a rose foam is an aperture plate having a multiplicity of apertures having a banana-like form.
  • the spray head is preferably made from Polypropylene.
  • the weight content of propellant gas is chosen from the range from 0.5 to 20%by weight, preferably 1 to 10 %by weight, more preferably 3 to 8 %by weight, based on the total weight of fill material and propellant gas (corresponding to a weight content of 80 to 99.5%by weight, preferably 90 to 99 %by weight, more preferably 92 to 97 %by weight of fill material) .
  • the expression fill material corresponds to the cleansing composition.
  • one or more propellants chosen from hydrocarbon gases, fluorinated gases, hydrofluorocarbon gases, dimethyl ether, nitrogen, air or carbon dioxide and/or mixtures thereof are contained in the composition according to the invention.
  • propellants chosen from isobutane, propane and n-butane. More preferably a blend of 60 %n-butane, 20 %isobutene and 20%propane (%by weight) is contained in the composition according to the invention.
  • sulfates are salts or esters of sulfuric acid.
  • the salts are represented by the formulas SO 4 2- (anion) and HSO 4 - (bisulfate anion) , whereas the esters have the formula R-O-SO 2 -O-R’, wherein R and R’ are organic residues and R’ may be hydrogen.
  • SO 4 2- anion
  • HSO 4 - bisulfate anion
  • esters have the formula R-O-SO 2 -O-R’, wherein R and R’ are organic residues and R’ may be hydrogen.
  • sulfuric acid dissociates and salts are formed.
  • free from sulfates means that the respective raw material or the respective composition contains less than 0.1 %by weight, preferably less than 0.01 %by weight, and more preferably 0 %by weight of sulfate ions and/or sulfate esters in relation to the total weight of the raw material and/or in relation to the total weight of the composition.
  • composition of the invention does not contain any surfactants having sulfate residues.
  • the total composition is free from any sulfate.
  • Fig. 1A and Fig. 1B show foams of the inventive product and the comparative product after 1 minute 38 seconds and 30 minutes, respectively;
  • composition of the present invention may be prepared by any technique known or effective to prepare a foamable cleansing composition.
  • the process to prepare the composition of the present invention comprises conventional formulating and mixing techniques. However, it is preferred, if the compositions according to the present invention shown in table A are prepared by the following method:
  • part B Mix the components of part B, add part B to part A, keep the temperature at about 60°C, mix the combined parts A + B by magnetic stirring until a uniform composition
  • composition shown in table B is a comparative composition containing soaps. This composition is preferably prepared according to the following method:
  • compositions according to the present invention shown intable C are prepared by the following method:
  • inventive cleansing composition forms a foam that is comparable to a composition containing soaps
  • foam of an inventive cleansing composition and a comparative product was compared.
  • the inventive composition was prepared according to example 10 (table C) and the comparative product was NIVEA Pure Clean Caring Speed Mousse Facial Cleanser ( ⁇ ) .
  • the comparative product contained Aqua, Potassium Cocoyl Glycinate, Propylene Glycol, Glycerin, Potassium Cocoate, Decyl Glucoside, Sodium Cocoamphoacetate, PEG-40 Hydrogenated Castor Oil ,Glyceryl Glucoside, Carnitine, Helianthus Annuus Seed Oil, Hydrolyzed Pearl, Camellia Sinensis Leaf Extract, Glycyrrhiza Glabra Root Extract, Centaurea Cyanus Flower Extract, Myristic Acid, Potassium Hydroxide, Palmitic Acid, Lauric Acid, Sodium Chloride, Citric Acid, Tocopherol, Sodium Benzoate, Lactic Acid, Potassium Sorbate, Trisodium EDTA, Phenoxyethanol, Methylisothiazolinone, Linalool, Perfume.
  • the inventive product is evaluated a little bit better than the comparative product, because the properties ” squeaky” and “tightness” are evaluated higher after usage of the comparative product, showing that the skin feels more squeaky and tight after usage of the comparative product.
  • the comparative product leaves the skin a little bit dryer than the inventive composition.
  • the standard RBC assay (10 minutes incubation) serves to estimate the in vivo mucous membrane of the eye irritation potential of surfactants and surfactant-containing products.
  • Hemolysis A defined aliquot of isolated calf erythrocytes is incubated for 10 minutes while shaking at room temperature (RT) with a series of increasing concentrations of the WAS test samples to be investigated (stock solution with formulations 1: 100 w/v or 0.1%active content in PBS for raw materials) . After centrifugation, the resulting supernatants are analyzed photometrically at 530 nm for their liberated hemoglobin (HbO 2 ) content. The relative degree of hemolysis is thereby calculated and the parameter H 50 [ ⁇ l/ml] is determined from the concentration-response curve. This indicates the concentration of the test samples at which 50%of hemoglobin is liberated.
  • RT room temperature
  • HbO 2 -Denaturation A defined aliquot of isolated calf erythrocytes is incubated for 10 minutes while shaking at RT with a fixed concentration of test sample (1%w/v or 0.1%active content) and then centrifuged. The change in spectral absorption at 575 nm and 540 nm is measured compared to native HbO 2 . The denaturation index DI [%] is calculated from the ratio of the absorption values to each other. Na lauryl sulfate serves as 100%standard (0.1%active content) .
  • L/D Quotient The quotient is the ratio of the hemolysis parameters (H 50 ) and denaturation (DI) and is used to characterize and classify the test samples investigated.
  • compositions according to the invention are moderately irritant to irritant.
  • the comparative composition (example 7) , which contains soaps, is evaluated worse, only irritant to moderately irritant.
  • all inventive formulas are well tolerable for the skin, especially the face.

Abstract

L'invention concerne une composition nettoyante moussante, en particulier une composition nettoyante pour le visage. Cette composition présente des propriétés nettoyantes efficaces et est en même temps douce et non irritante. Ladite composition est mise à disposition sous la forme d'une mousse.
PCT/CN2020/070802 2020-01-08 2020-01-08 Composition nettoyante cosmétique WO2021138824A1 (fr)

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Citations (6)

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WO2019030458A2 (fr) * 2017-08-11 2019-02-14 Laboratoires De Biologie Vegetale Yves Rocher Emulsion moussante a haute teneur en huile et ses utilisations, notamment pour l'hygiene corporelle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009761A1 (fr) * 1991-11-22 1993-05-27 Richardson-Vicks Inc. Compositions combinees de nettoyage et d'hydratation de la peau
WO1999039689A2 (fr) * 1998-02-03 1999-08-12 Unilever Plc Produit moussant pour le nettoyage de la peau
WO2005034895A1 (fr) * 2003-10-10 2005-04-21 Frenchtop Natural Care Products B.V. Composition pour le lavage des cheveux et du corps
US20060264344A1 (en) * 2005-05-23 2006-11-23 Unilever Home & Personal Care Usa, Division Of Conopco, Inc. Mild foaming cleansing composition
CN103202781A (zh) * 2012-01-16 2013-07-17 南京华狮化工有限公司 一种乳霜沐浴乳组合物及其应用
WO2019030458A2 (fr) * 2017-08-11 2019-02-14 Laboratoires De Biologie Vegetale Yves Rocher Emulsion moussante a haute teneur en huile et ses utilisations, notamment pour l'hygiene corporelle

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