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WO2008037793A1 - Composition cosmétique multifonctionnelle, attirée par la silicone, anhydre - Google Patents

Composition cosmétique multifonctionnelle, attirée par la silicone, anhydre Download PDF

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Publication number
WO2008037793A1
WO2008037793A1 PCT/EP2007/060308 EP2007060308W WO2008037793A1 WO 2008037793 A1 WO2008037793 A1 WO 2008037793A1 EP 2007060308 W EP2007060308 W EP 2007060308W WO 2008037793 A1 WO2008037793 A1 WO 2008037793A1
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WO
WIPO (PCT)
Prior art keywords
silicone
composition
skin
agents
ethoxylated
Prior art date
Application number
PCT/EP2007/060308
Other languages
English (en)
Inventor
Ricardo Diez
Joe Walck
Carolyn Romaine
Original Assignee
Chanel Parfums Beaute
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 Chanel Parfums Beaute filed Critical Chanel Parfums Beaute
Publication of WO2008037793A1 publication Critical patent/WO2008037793A1/fr

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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
    • A61K8/72—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
    • A61K8/89—Polysiloxanes
    • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
    • 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
    • A61K8/0241—Containing particulates characterized by their shape and/or structure
    • A61K8/0279—Porous; Hollow
    • 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
    • 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
    • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8105—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • A61K8/8111—Homopolymers or copolymers of aliphatic olefines, e.g. polyethylene, polyisobutene; Compositions of derivatives of such polymers
    • 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
    • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • A61K8/8152—Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
    • 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
    • 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
    • A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
    • A61K2800/24—Thermal properties
    • A61K2800/242—Exothermic; Self-heating; Heating sensation
    • 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
    • A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
    • A61K2800/28—Rubbing or scrubbing compositions; Peeling or abrasive compositions; Containing exfoliants
    • 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
    • A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
    • A61K2800/30—Characterized by the absence of a particular group of ingredients
    • A61K2800/31—Anhydrous
    • 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
    • A61K2800/41—Particular ingredients further characterized by their size
    • A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
    • 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
    • A61K2800/56—Compounds, absorbed onto or entrapped into a solid carrier, e.g. encapsulated perfumes, inclusion compounds, sustained release forms
    • 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
    • A61K2800/60—Particulates further characterized by their structure or composition
    • A61K2800/61—Surface treated
    • A61K2800/614—By macromolecular compounds
    • 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
    • A61K2800/60—Particulates further characterized by their structure or composition
    • A61K2800/65—Characterized by the composition of the particulate/core
    • A61K2800/651—The particulate/core comprising inorganic material
    • 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
    • A61K2800/60—Particulates further characterized by their structure or composition
    • A61K2800/65—Characterized by the composition of the particulate/core
    • A61K2800/654—The particulate/core comprising macromolecular material

Definitions

  • the present invention relates to essentially anhydrous, siliphilic topically-applied compositions that offer controlled exfoliation and deliver skin-benefit ingredients. Additionally, the present invention relates to methods for using such compounds in treating dermatologic and cosmetic conditions, particularly those of aging and photo-damaged skin, and reducing the appearance of intrinsic and/or extrinsically- induced signs of aging. The present invention also provides related methods for enhancing the efficacy of an active ingredient.
  • Intrinsic aging is characterized by a slowing in both the shedding of dead skin cells and turnover of new skin cells. It is also characterized by a slowing of production of collagen and elastin. These changes, which generally begin to manifest in adults in their mid-twenties, are visibly perceptible as fine lines, wrinkles, skin discoloration and age spots, as well as dull and/or uneven skin texture. Extrinsic aging resulting from exposure to ultraviolet radiation (as well as other environmental stressors and/or pollutants) can cause and/or accelerate these changes. Aging skin, whether intrinsic or extrinsic, also exhibits changes in biochemical and mechanical properties, including reduced elasticity, decreased hydration, decreased barrier function and/or dryness.
  • 2005/0169868 which teaches a method for exfoliating the skin by topical application of an anhydrous composition
  • an anhydrous composition comprising: (i) at least three insoluble particles having an average particle size difference between each of at least 50 microns; (ii) a heat -generating agent; and (iii) a silicone oil, a silicone copolymer, silicone elastomer, or mixtures thereof.
  • the particle size ranges taught in this application are from about 20 to 500 microns, with the smallest particle group having a size of about 20 to 50 microns, and the largest particle group having a size of about 300 to 500 microns.
  • compositions and methods of treatment of the present invention with the incorporation of collapsible, multifunctional exfoliating agents, such as Macrobead 7100, in essentially anhydrous, siliphilic compositions.
  • Macrobead is the tradename of one of three microparticle adsorbent polymeric delivery systems available from Amcol Health & Beauty Solutions (Arlington Heights, IL); two other Amcol delivery systems are sold under the tradenames PolyTrap and PolyPore . PolyTrap and Macrobead share the same INCI name - Lauryl Methacrylate/ Dimethacrylate Crosspolymer . According to a 2004 Amcol product brochure entitled “Multifunctional Delivery and Rheology Technologies" these products differ in size,- Macrobeads are 200 - 400 microns, whereas PolyTrap molecules are 20 - 80 microns.
  • the 2004 Amcol brochure further explains the mechanism of delivery from Macrobeads as follows: "After rubbing, the Macrobead begins to fracture, releasing part of its "payload” [of active ingredients] . Continued rubbing will further reduce the fractured Macrobead into smaller and smaller particles, with additional release of [active] ingredients.” As the Macrobead breaks down, smaller "invisible” particles retain a portion of their payload to continue to deliver over time. As used in the present application, the term “collapsible” means a particle that fractures upon rubbing.
  • the collapsible exfoliating agents used in the present invention are also multifunctional - they release an emollient (e.g., dimethicone) upon fracture, thus providing controlled exfoliation (by reduction in the size of the abrasive particle) .
  • controlled exfoliation means a system in which the exfoliating particle acts for a limited period of time, after which it no longer acts to provide abrasion.
  • the exfoliating agents used in the present invention are polymeric acrylate bead particles with a void within the particle in which emollients and/or other skin- benefit ingredients are entrapped for subsequent delivery to the skin.
  • the inclusion of Macrobeads in a cleansing composition is taught in US Patent 6,228,385.
  • the '385 Patent discloses a liquid antimicrobial, skin-moisturizing composition comprising (i) a huraectant (preferably glycerin) and (ii) an emollient (preferably an alkyl-substituted polysiloxane) that is immiscible in a hydro-alcoholic base and, accordingly, is encapsulated or entrapped in a particulate polymeric delivery material .
  • a huraectant preferably glycerin
  • an emollient preferably an alkyl-substituted polysiloxane
  • the delivery material is taught to be an acrylate cross-polymeric material that entraps an emollient for subsequent release upon application of the composition to the skin.
  • acrylate crosspolymer delivery systems disclosed in the '385 Patent are PolyTrap * 7100 Macrobeads containing about 35 weight percent (based on the weight of the acrylates copolymer) of entrapped dimethicone.
  • the '385 Patent further describes Macrobeads as being adapted to "crumble readily" when spread across the skin.
  • the compositions taught in the '385 Patent contain water, and thus suffer from the aesthetic as well as important performance limitations, including the inability to be formulated with warming agents that release heat upon being hydrated (when applied to the skin) .
  • a further aspect of the present invention relates to the rejuvenating skin benefits derived from mild warming of the skin upon application of a non-oily, exfoliating formulation that does not leave a gritty residue.
  • warming is desirable not only from the standpoint of providing a pleasant sensory perception to the consumer but also physiologically.
  • mildly-warmed skin may be more easily cleansed of debris, including dead skin cells and pore-clogging substances.
  • warming may enhance the efficiency of delivery of topical active ingredients.
  • more efficient delivery of active ingredients may be attributable to increased bioavailability, percutaneous absorption and/or penetration of the active agent.
  • penetration enhancers to increase the efficacy of topically- applied compositions in delivering active ingredients is well-known in the art. See, e.g., EW Smith and HI Maibach
  • one object of the present invention is to create the appearance of rejuvenated skin by treatment with compositions that include a micronized, non- abrasive, silicone-absorbing powder, preferably one that creates a mild skin-warming by releasing heat when hydrated.
  • compositions of the present invention are essentially anhydrous.
  • US Patent Application Publication No. 2004/0208902 teaches heat-releasing formulations that also provide a controlled- release of cosmetic and pharmaceutical ingredients. More particularly, the disclosed formulations are based on zeolites of specific pore sizes. According to product literature from Arizona Natural Resources, a distributor of zeolites, upon contact with the skin, heat is released, giving consumers a signal that the "product is doing something," while at the same time providing skin treatment by delivering active ingredients that have been "loaded” into the pores of zeolites. Zeolites are used, for example, in Clean & Clear Warming Daily Pore Scrub sold by Johnson and Johnson. The compositions and methods of treatment of the present invention are not based on zeolites. Upon hydration or solution in water, zeolites undesirably create an excessively alkaline pH on the skin.
  • this rinse-facilitating agent is an oxyalkylated agent comprising at least 50% by weight of an ethoxy group, selected from the group consisting of polyethylene glycols, ethoxylated polyols, ethoxylated fatty alcohols, ethoxylated fatty acid esters, ethoxylated polysorbates and ethoxylated silicones.
  • US Patent No. 5,648,066 teaches the use of straight-chain polyethylene homopolymers as solidifying agents for nonvolatile silicone fluids. More particularly, the '066 Patent discloses topically-applied solid silicone compositions comprising 3 - 20% polyethylene of a low molecular weight polyethylene solidifying agent having an average molecular weight of less than about 1,000 and 20 - 97% of a nonvolatile silicone fluid.
  • the compositions taught in the '066 Patent fail to include or suggest several required elements of the present invention - namely, a mild self-warming agent that is activated by hydration or a hydrophilic rinse- facilitating agent.
  • compositions of the present invention comprise (i) a silicone compound selected from the group consisting of fluids, elastomers and resins and mixtures thereof, present in a concentration of greater than about 50% by weight; (ii) polymeric acrylate bead particles with a void volume within the particles in which one or more skin-benefit ingredients are entrapped; (iii) a micronized, non-abrasive, silicone-absorbing powder, preferably one which produces heat when hydrated conforming to the formula M +2 X where M is selected from the group consisting of Magnesium, Calcium and Barium and X is selected from the group consisting of Cl 2 , SO 4 and CO 3 ; (iv) a rinse-facilitating agent selected from oxyalkylated compounds comprising at least 50% by
  • the present invention relates to finished formulations (i.e., products sold for use by or on a consumer or patient) that are “essentially anhydrous” and “siliphilic . "
  • essentially anhydrous is meant that no water is intentionally added by the formulator. Small amounts of water may be present in certain ingredients which are included in compositions within the scope of the present invention, but at no more than a de minimus level. This is because non-de minimus amounts of water will react with the preferred micronized, non-abrasive, silicone-absorbing powder that provides mild skin-warming upon application. By de minimus level is meant less than about 1%, preferably less than about 0.5%, and still more preferably less than about 0.1%.
  • siphilic is meant a composition that is "silicone- loving” , as opposed to oleophilic or hydrophilic respectively oil- and water-loving. As used in the present application, a siliphilic composition is one that contains greater than 50% of a silicone fluid, a silicone elastomer, a silicone resin, or mixtures thereof.
  • Silicone compounds and their use in topical formulations are well-known in the cosmetic and dermatologic arts. Silicones are commercially available from a variety of sources. As will be appreciated by persons of skill the difference between these three classes of compounds is one of degree of crosslinking . Fluids have essentially no crosslinking, elastomers some crosslinking, and resins are heavily crosslinked.
  • Silicone elastomers useful in the present invention may be obtained by reacting, in the presence of a catalyst such as platinum, a divinyl-terminated polysiloxane, preferably a poly (divinylpolydimethylsiloxane) , with an organohydrogenpolysiloxane, preferably a copolymer of polydimethylsiloxane and polymethylhydrogensiloxane, which may optionally bear at least one Ci 0 -C 50 alkyl and/or phenyl side chain, among which one may mention the polymers sold by SHIN ETSU under the trade names KSG- 6, KSG- 16 (INCI name: Dimethicone and Dimethicone/Vinyl Dimethicone Crosspolymer) , KSG- 31 (INCI name: Squalane and Vinyl Dimethicone/Lauryl Dimethicone Crosspolymer, KSG-32 (INCI name: Isododecane and PEG-15/L
  • silicone elastomers may be obtained according to a similar process, except that the crosslinker is an organic diene instead of a dimethyl/methylvinyl copolymer.
  • Such silicone elastomers are sold by DOW CORNING under the trade names DC 9040 (INCI name: Cyclopentasiloxane and Dimethicone
  • DC 9041 (INCI name: Dimethicone and Dimethicone Crosspolymer) .
  • silicone elastomers may be obtained as described in US- 5,412,004, preferably by reacting an organohydrogen- polysiloxane, the silicon atoms of which are substituted by alkyl groups such as methyl and/or fatty alkyl groups, with a divinyl -terminated polyoxyalkylene .
  • the polyoxyalkylene crosslinking groups provide these elastomers with emulsifying properties.
  • Such silicone elastomers are sold by SHIN-ETSU under the trade names KSG-21 and KSG-210 (INCI name: Dimethicone and Dimethicone/PEG-lO/15 Crosspolymer) .
  • silicone elastomers may be obtained as described in US- 5,128,431, by reacting an epoxy-containing compound, such as an epoxy- functional silicone, on an organohydrogen- polysiloxane .
  • An elastomer of this type which is obtained by self-polymerizing an organohydrogenpolysiloxane bearing epoxy functions, is available from GE SILICONES under the trade name Velvesil 125 (INCI name: Cyclopentasiloxane and C30-45 Alkyl Cetearyl Dimethicone Crosspolymer) .
  • Preferred silicone elastomers useful in the present invention comprise alkyl polyether modified crosspolymers .
  • Silicone fluids and/or resins useful in the present invention preferably conform to the following structure:
  • a is an integer ranging from 1 to 2000;
  • b is an integer ranging from 0 to 200;
  • R is - (CH 2 ) c- ; and c is an integer ranging from 2 to 10.
  • the silicone is a fluid, and b is 0. In another embodiment, the silicone is a resin and b has a value of from 10 to 200.
  • the silicone comprises a mixture of at least two of a silicone fluid, a silicone elastomer and a silicone resin.
  • the silicone comprises or is a mixture of at least one silicone fluid and at least one silicone elastomer.
  • compositions of the present invention provide controlled exfoliation. This is accomplished by using polymeric acrylate bead particles with a void within the particle in which skin- benefit ingredients such as emollients and preferably dimethicones (polydimethylsiloxanes) are entrapped for subsequent delivery to the skin.
  • the polymeric acrylate bead particles are crosspolymers of an alkyl methacrylate, whose alkyl groups contains from 6 to 20 carbon atoms, and preferably from 10 to 16 carbon atoms, with alkylene glycol dimethacrylate, such as ethylene glycol dimethacrylate.
  • Polymeric acrylate bead particles of this type are sold by DOW CORNING under the trade name Macrobead 7100 (INCI name Lauryl Methacrylate/Dimethacrylate Crosspolymer) .
  • the polymeric acrylate bead particles of this invention preferably have a particle size in the range of from about 200 to about 400 microns. They may be incorporated in amounts from 3% to 20%, preferably from 5% to 10%.
  • the polymeric acrylate bead particles contain at least one skin-benefit agent including anti-acne agents, antimicrobial agents, antifungal agents, antioxidants, external analgesics, anti- inflammatory agents, anti-irritants, humectants, moisturizers, skin bleaching and lightening agents, skin-conditioning agents, skin soothing and/or healing agents, vitamins and derivatives thereof .
  • skin-benefit agent including anti-acne agents, antimicrobial agents, antifungal agents, antioxidants, external analgesics, anti- inflammatory agents, anti-irritants, humectants, moisturizers, skin bleaching and lightening agents, skin-conditioning agents, skin soothing and/or healing agents, vitamins and derivatives thereof .
  • Other cosmetic and dermatologic agents that may be entrapped in the void volume in the polymeric acrylate bead particles are described in the International Cosmetic Ingredient Dictionary and Handbook published by the Cosmetics Toiletries and Fragrance Association, as well as in U.S. Patent No
  • compositions of the present invention may include a second exfoliating or abrasive agent well-known to those of skill in the art, including but not limited to diatomaceous earth, a commercial ingredient widely-available from a number of sources .
  • a second exfoliating or abrasive agent well-known to those of skill in the art, including but not limited to diatomaceous earth, a commercial ingredient widely-available from a number of sources .
  • One aspect of the present invention is directed to creating a smoother skin surface by inclusion of a micronized, non- abrasive, silicone-absorbing powder.
  • Micronized silicone- absorbing powders suitable for use in compositions and methods of treatment of the present invention are known to those of skill in the art.
  • Non-limiting examples of these micronized, powders include cornstarch, oatmeal, talcum, silica, silica-coated mica, clays, metallic fatty acid carboxylates , including but not limited to, calcium, magnesium, zinc or aluminum salts of C 12 to C 22 fatty acids, alpha and beta hydroxy acids, sodium bicarbonate, and organic polymers based on HDI/lactones .
  • the micronized, non-abrasive, silicone-absorbing powders open pores and dislodge pore-clogging materials by the release of heat when the micronized powder is hydrated.
  • Micronized, non- abrasive, silicone-absorbing powders which produce heat when hydrated, and thus a desired mild-warming of the skin surface, are known to those of skill in the art and preferably conform to the formula M +2 X where M is selected from the group consisting of Magnesium, Calcium and Barium and X is selected from the group consisting of Cl 2 , SO 4 and CO 3 .
  • a preferred mild skin-warming agent is MgSO 4 .
  • compositions and methods of treatment of the present invention may also include additional mild skin-warming agents that are activated upon hydration. These are described in US Patent Application Publication No. 2005/0169868, the disclosure of which is incorporated by reference.
  • the micronized, non-abrasive, silicone-absorbing powder which upon hydration produces mild skin-warming has a surface which is coated with a hydrophobic material, preferably silicone.
  • silicone-absorbing, mild skin-warming powder is MgSO 4 with a hydrophically-coated surface
  • it is present in a concentration of at least about 5%, preferably at least about 20%.
  • compositions of the present invention contain a hydrophilic rinse-facilitating agent.
  • this rinse-facilitating agent is an oxyalkylated agent comprising at least 50% by weight of an ethoxy group, selected from the group consisting of polyethylene glycols, ethoxylated polyols, ethoxylated fatty alcohols, ethoxylated fatty acid esters, ethoxylated polysorbates and ethoxylated silicones.
  • the rinse- facilitating agent is an essential element of the present invention; without this ingredient, thorough and efficient removal of the siliphilic composition after treatment (e.g., by simple rinsing with water and/or wiping) is not accomplished.
  • the rinse-facilitating agent is a polyethylene glycol with a molecular weight of from about 200 to about 2000, preferably with a molecular weight of from about 200 to about 1000.
  • the rinsing aid is a dimethicone ethoxylated with from about 6 to about 20 units of polyethylene glycol, such as dimethicone-PEG 6.
  • the rinsing aid is an ethoxylated sorbitan or sorbitol aliphatic ester, where the alkylene oxide is typically an ethylene oxide.
  • the rinse- facilitating agent is a mixture of laurate esters, predominantly the monoesters of sorbitol and sorbitan, condensed with approximately twenty moles of ethylene.
  • a preferred rinse-facilitating agent is Polysorbate 20, sold under the tradename Tween 20.
  • the rinse-facilitating agent may also be a mixture of stearate and/or oleate esters of sorbitol and sorbitan, consisting predominantly of mono fatty acid esters condensed with approximately 20 moles of ethylene oxide .
  • compositions of the present invention optionally include a polyalkylene having a melt point from about 5O 0 C to about 95 0 C, more preferably from about 75°C to about 90 0 C.
  • the polyalkylene is polyethylene conforming to the formula - (CH 2 -CH2) n - , preferably having a molecular weight of from about 400 to about 500.
  • n is 16 and the polyethylene is present at a concentration of from about 0.1% to about 4%, more preferably 1.5% - 2.5%.

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Abstract

La présente invention concerne une composition à application topique, attirée par la silicone, essentiellement anhydre comprenant (i) un composé de silicone présent dans une concentration supérieure à environ 50% en poids et choisi dans le groupe englobant des liquides de silicone, des élastomères de silicone et des résines de silicone, et des mélanges de ceux-ci; (ii) des particules de type perles d'acrylate polymère qui abritent un vide en leur sein et dans lesquelles sont piégés les ingrédients bienfaisants pour la peau; (iii) une poudre absorbant la silicone, non abrasive, micronisée; (iv) un agent facilitant le rinçage, hydrophile et choisi dans le groupe comprenant des composés oxyalkylatés qui renfement au moins 50% en poids d'un groupe éthoxy; et (v) éventuellement, un polyalkylène conforme à la formule - (CH2- CH2) n, possédant un point de fusion compris entre environ 500C et environ 950C.
PCT/EP2007/060308 2006-09-28 2007-09-28 Composition cosmétique multifonctionnelle, attirée par la silicone, anhydre WO2008037793A1 (fr)

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US84764706P 2006-09-28 2006-09-28
US60/847647 2006-09-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2293773A4 (fr) * 2008-06-30 2013-11-20 Kimberly Clark Co Dispositif polysensoriel de nettoyage pour l hygiène personnelle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050002890A1 (en) * 2003-05-22 2005-01-06 L'oreal Skin makeup compositions having optimized application qualities
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WO2006131402A1 (fr) * 2005-06-10 2006-12-14 L'oreal Produit cosmétique comprenant deux préparations séparées dont l'une inclut un polyrotaxane réticulé

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JP2005041795A (ja) * 2003-07-24 2005-02-17 P & P F:Kk 凹凸補正用油性化粧料
US20050239950A1 (en) * 2004-04-06 2005-10-27 Guenaelle Martin Anhydrous cosmetic compositions comprising at least one polymeric gelling agent, at least one non-volatile oil, and poly(methyl methacrylate) particles
WO2006131402A1 (fr) * 2005-06-10 2006-12-14 L'oreal Produit cosmétique comprenant deux préparations séparées dont l'une inclut un polyrotaxane réticulé

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