Abstract:
La présente invention se rapporte à un procédé de préparation de compositions destinées à la photoprotection de la peau et/ou des cheveux contre le rayonnement ultraviolet, en particulier le rayonnement solaire, consistant à préparer dans une première étape une émulsion huile-dans-eau de préférence exempte de tout filtre, puis séparément dans une deuxième étape une phase huileuse comprenant au moins un filtre UV hydrophile et au moins un filtre lipophile, et à incorporer ladite phase huileuse dans ladite émulsion. L'invention se rapporte également aux compositions susceptibles d'être obtenues par ce procédé, et qui comprennent : i) une phase aqueuse continue dispersante, ii) une première phase huileuse H1 dispersée discontinue, iii) une deuxième phase huileuse H2 dispersée discontinue, iv) au moins un émulsionnant H/E, v) au moins un émulsionnant E/H, vi) au moins un filtre lipophile, vii) au moins un filtre hydrophile, lesdites première et deuxième phases huileuses H1 et H2 étant incompatibles entre elles, les globules constituant ladite phase huileuse H1 ayant une taille moyenne différente des globules constituant ladite phase huileuse H2, ces compositions présentant un SPF et une rémanence à l'eau de ce SPF améliorés.
Abstract:
The present invention relates to improved sunscreen compositions, more preferably to improved sunscreen compositions containing at least one sunscreening agent (sunscreen) and a silicone-polyamide copolymer.
Abstract:
The present invention relates to methods of peeling skin using certain salicylic acid derivatives, to chemical skin peel compositions containing these certain salicylic acid derivatives in a carrier, preferably a dermatologically acceptable carrier, to methods of making these compositions, and methods of applying this certain compound and/or composition to skin to be peeled.
Abstract:
Topically applicable cosmetic/dermatological compositions well suited for both effective and SPF-enhanced UV-photoprotection of human skin, hair and/or scalp, most preferably packaged as spray delivery systems, contain (a) an effective UV-photoprotecting amount of at least one UV-A and/or UV-B sunscreen, most notably the sunscreen avobenzone, and (b) an amount of the copolymer tricontanyl PVP effective to statistically significantly enhance the SPF value of said at least one UV-A and/or UV-B or avobenzone sunscreen, formulated into (c) a topically applicable, cosmetically/dermatologically acceptable vehicle, diluent or carrier therefor; the subject compositions optionally contain a thus-effective amount of an artificial/sunless tanning agent.
Abstract:
Topically applicable cosmetic/dermatological compositions well suited for both effective and typically SPF-enhanced photoprotection and artificial tanning of human skin and/or scalp, advantageously packaged as spray delivery systems, contain: (i) a UV-photoprotecting effective amount of a UV-photoprotecting agent, (ii) an artificial tanning effective amount of an artificial tanning agent, and (iii) a compatibilizing and typically SPF-enhancing amount of a silicone/acrylate graft copolymer which comprises an acrylic backbone having pendant organosiloxane branches depending therefrom, in particular poly(isobutyl methacrylate-co-methyl FOSEA)-g-poly(dimethylsiloxane) or a terpolymer of isobutyl methacrylate, acrylic acid and a methacryloxypropyl/butyldimethyl silyl macromer.
Abstract:
PROBLEM TO BE SOLVED: To obtain a good and stable oil-in water type emulsion. SOLUTION: This emulsion contains ionic polymer particles and has (1/5) to (1/40) weight ratio of polymer particles to liquid phase in an oil-in-water type emulsion containing droplets of oil having
Abstract:
PROBLEM TO BE SOLVED: To obtain a homogeneous and stable cosmetic composition. SOLUTION: This cosmetic composition for protecting a keratinous substance from light comprises one or more metal oxide nanopigments and an acrylic terpolymer of (a) 20-70 wt.% of an α,β-monoethylenic unsaturated carboxylic acid, (b) 20-80 wt. % of a monoethylenic unsaturated non-surfactant monomer different from the component (a) and (c) 0.5-60 wt.% of a nonionic urethane monomer which is a reaction product between a monofunctional nonionic surfactant and a monoethylenic unsaturated monoisocyanate in an aqueous carrier acceptable as a cosmetic.
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject emulsion having an aging stability and useful as a component of cosmetic, etc., effective for protecting the skin, hair, etc., from ultraviolet rays by using a specific silicone emulsifier and a specific polymer as essential components. SOLUTION: This emulsion contains (A) 0.2-5wt.% of a silicone emulsifier consisting of a polyalkylene polyether siloxane containing polyoxyethylene chain and polyoxypropylene chain grafted to the main chain, having a number- average molecular weight of preferably >=15,000 and expressed by the formula [R1 and R4 are each H, a straight or branched-chain 1-30C alkyl, etc.; R2 is (Cx H2 X)-(OC2 H4 )a -(OC3 H6 )b -OR3 ; R3 is H, a 1-12C straight or branched-chain alkyl, etc.; (n) is 1-1,000; (p) is 1-30; (a) is 1-50; (b) is (a); (x) is 1-5] and (B) 0.2-10wt.% of a preferably polyhydroxylated polyoxyalkylene glycol fatty acid ester polymer having W/O-type emulsifying characteristics.
Abstract:
PROBLEM TO BE SOLVED: To obtain a light-protecting cosmetic composition for protecting the skin and/or hair from ultraviolet rays such as sun light by including respectively specific shielding systems. SOLUTION: This composition is produced by including (A) a soluble shielding system composed of a silicon derivative having benzotriazol functional group and (B) a dissolving shielding system composed of a cinnamic acid derivative and/or a salicylic acid derivative in a cosmetically permissible vehicle. The component B is present in an amount sufficient for completely dissolving the component A by itself. The silicon derivative of the component A is preferably a polyorganosiloxane having the above functional group and containing the unit of formula O(3-a)/2Si(R7)a-G [R7 is a (halogenated) 1-10C alkyl or the like; (a) is 0-3; G is a univalent group of formula (Y is a 1-8C alkyl or the like; X is O or the like; Z is H or a 1-4C alkyl; (n) is 0-3; (m) is 0 or 1; (p) is 1-10)], etc.
Abstract:
PROBLEM TO BE SOLVED: To obtain a cosmetic composition for topical application that can be used for protecting skin and/or hair from ultraviolet rays by using at least two of specific lipophilic screening agents of which one is compatible to the other. SOLUTION: This cosmetic composition is topically used for protecting skin and/or from light and contains 0.25-15 wt.% of light-screening components selected from (A) 4-methylbenzylidenecamphor (formula I) and (B) 4-tert.- butyl)-4'-methoxybenoylmethane (the compound of formula II) is a cosmetically acceptable carrier, and they are solubilized with a sufficient amount of compatible screening components selected from (C) homomenthyl salicylate (the compound of formula III), (D) octyl salicylate (the compound of formula IV) and their mixture to dissolve all of the screening components to be dissolved (in an amount of 0.5-20%).