Vehicle systems for use in cosmetic compositions
First Claim
1. A cosmetic composition comprising:
- (a) from about 80% to about 100% of a vehicle system which comprises;
(A) from about 0.1% to about 10.0% by weight of the cosmetic composition of a hydrophobically modified nonionic water-soluble polymer which comprises a water-soluble polymer backbone and hydrophobic groups selected from the group consisting of C8 -C22 alkyl, aryl alkyl, alkyl aryl groups and mixtures thereof;
wherein the ratio of the hydrophilic portion to the hydrophobic portion of the polymer is from about 10;
1 to about 1000;
1; and
(B) from about 0.02% to about 0.3% by weight of the cosmetic composition of a water-soluble surfactant having a molecular weight less than about 20,000; and
(C) from about 65% to about 99% by weight of the cosmetic composition of a compatible solvent; and
(b) from 0% to about 20%, by weight, of an active cosmetic component;
wherein said cosmetic compositions comprise no more than about 1.0% total of water-soluble surfactant materials.
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Accused Products
Abstract
Disclosed is a unique vehicle system which provides a desirable rheology to products formulated therewith, enhanced dispersion of actives therein, and improved deposition of actives therefrom. This vehicle system comprises a primary thickening agent which is a nonionic long chain alkylated water-soluble polymer, and a secondary thickening agent which is a water-soluble surfactant, dispersed in a compatible solvent. Optionally, a rheological aid, which is a chelating agent may be included in the vehicle system. Also, optionally, a distributing aid, which is a water-soluble polymer of either high molecular weight or strong ionic character may be included in the vehicle system. These vehicle systems are useful in cosmetic compositions which are used to deliver an active component to the hair or skin. The vehicle systems are particularly useful in hair care compositions, especially rinse-off hair conditioning compositions, because they effectively deliver the hair conditioning component to the hair without depositing a substantial amount of the vehicle material onto the hair.
357 Citations
49 Claims
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1. A cosmetic composition comprising:
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(a) from about 80% to about 100% of a vehicle system which comprises; (A) from about 0.1% to about 10.0% by weight of the cosmetic composition of a hydrophobically modified nonionic water-soluble polymer which comprises a water-soluble polymer backbone and hydrophobic groups selected from the group consisting of C8 -C22 alkyl, aryl alkyl, alkyl aryl groups and mixtures thereof;
wherein the ratio of the hydrophilic portion to the hydrophobic portion of the polymer is from about 10;
1 to about 1000;
1; and(B) from about 0.02% to about 0.3% by weight of the cosmetic composition of a water-soluble surfactant having a molecular weight less than about 20,000; and (C) from about 65% to about 99% by weight of the cosmetic composition of a compatible solvent; and (b) from 0% to about 20%, by weight, of an active cosmetic component;
wherein said cosmetic compositions comprise no more than about 1.0% total of water-soluble surfactant materials. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A hair care composition comprising:
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(a) from about 80% to about 99.9%, by weight of the hair care composition, of a vehicle system which comprises; (A) from about 0.2% to bout 5.0%, by weight of the hair care composition, of a nonionic cellulose ether having a hydroxyethyl molar substitution of from about 2.3% to about 3.7%, and being further substituted with a C16 alkyl group at from about 0.40% is about 0.95%, by weight, wherein the unsubstituted hydroxyethyl cellulose has an average molecular weight of from about 300,000 to bout 700,000; (B) from about 0.05% to about 0.3%, by weight of the hair care composition, of a water-soluble surfactant, having a molecular weight less than about 20,000, which is selected from the group consisting of cetyl betaine, ammonium lauryl sulfate, ammonium laureth sulfate, cetyl trimethyl ammonium chloride, and mixtures thereof; (C) from about 0.05% to about 0.3%, of a chelating agent which is selected from the group consisting of ethylene diamine tetra acetic acid and salts thereof, citric acid and salts thereof, and phosphoric acid and salts thereof; (D) from about 0.05% to about 1.0% of a distributing aid which is selected from the group consisting of xanthan gum and dextran having a molecular weight greater than about 1,000,000; and (E) from about 65% to about 99% by weight of the hair care composition of a compatible solvent; and (b) from about 0.1% to about 20%, by weight of the hair care composition, of an active hair care component;
wherein said hair care composition comprises no more than about 0.5% total of water-soluble surfactants;
no more than about 1% of fatty alcohol materials; and
wherein said hair care composition has a rheology that is characterized by a shear stress of from 0 to about 50 pascal over a shear rate range of from about 0.04 sec-1 to about 25 sec-1. - View Dependent Claims (48, 49)
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Specification