Skin and hair treatment composition and process for using same resulting in controllably-releasable fragrance and/or malodour counteractant evolution
First Claim
1. A human epidermal and/or hair treatment composition comprising an admixture of (i) a plurality of microcapsules each of which (a) has an outside diameter in the range of from about 0.01 to about 1000 microns;
- (b) has a wall having a thickness in the range of from about 0.001 to about 100 microns and has a core comprising a liquid selected from the group of fragrances, solvents, malodor counteractant compositions, beneficial agents and mixtures of fragrance, solvent, malodor counteractant compositions and beneficial agents, wherein greater than about 50 weight percent of the liquid has a C log10P of from about 1.5 to about 8.0; and
wherein the solvent composition (A) is compatible with said fragrance composition and/or said malodour counteractant composition and (B) has a C log10P greater than about 2.0 wherein P represents the n-octanol/water partition coefficient for each of said fragrance composition components and/or said malodour counteractant composition components and P′
represents the n-octanol/water partition coefficient for each of said solvent components and (ii) a human epidermal skin treatment and/or hair treatment base for maintaining in suspension said plurality of microcapsules, selected from the group consisting of a gel base, a suspension, a powder and an emulsion base, the concentration of fragrance composition components and/or malodour counteractant composition components in said human epidermal and/or hair treatment composition being in the range of from about 0.1 to about 50.0% by weight of said human epidermal and/or hair treatment composition.
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Abstract
Described is a human epidermal and/or human hair treatment composition of (i) fragrance and/or malodour counteractant and (ii) fragrance- and/or malodour counteractant-compatible solvent-containing microcapsules provided in a suspension gel or emulsion. Also described is a method for delivery of fragrance and beneficial agents to the human epidermal surface area region treatment and/or human hair treatment wherein the microcapsules remain on the human epidermis and/or on the hair follicles for a substantial period of time subsequent to their application and the microcapsules are ruptured over a period of time, thereby effecting both an initial delivery of fragrance and beneficial agent subsequent to rubbing, and, in addition, a controlled release of fragrance and beneficial agents into to the treated human epidermis and/or hair follicles.
142 Citations
25 Claims
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1. A human epidermal and/or hair treatment composition comprising an admixture of (i) a plurality of microcapsules each of which (a) has an outside diameter in the range of from about 0.01 to about 1000 microns;
- (b) has a wall having a thickness in the range of from about 0.001 to about 100 microns and has a core comprising a liquid selected from the group of fragrances, solvents, malodor counteractant compositions, beneficial agents and mixtures of fragrance, solvent, malodor counteractant compositions and beneficial agents, wherein greater than about 50 weight percent of the liquid has a C log10P of from about 1.5 to about 8.0; and
wherein the solvent composition (A) is compatible with said fragrance composition and/or said malodour counteractant composition and (B) has a C log10P greater than about 2.0 wherein P represents the n-octanol/water partition coefficient for each of said fragrance composition components and/or said malodour counteractant composition components and P′
represents the n-octanol/water partition coefficient for each of said solvent components and (ii) a human epidermal skin treatment and/or hair treatment base for maintaining in suspension said plurality of microcapsules, selected from the group consisting of a gel base, a suspension, a powder and an emulsion base, the concentration of fragrance composition components and/or malodour counteractant composition components in said human epidermal and/or hair treatment composition being in the range of from about 0.1 to about 50.0% by weight of said human epidermal and/or hair treatment composition. - 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)
- (b) has a wall having a thickness in the range of from about 0.001 to about 100 microns and has a core comprising a liquid selected from the group of fragrances, solvents, malodor counteractant compositions, beneficial agents and mixtures of fragrance, solvent, malodor counteractant compositions and beneficial agents, wherein greater than about 50 weight percent of the liquid has a C log10P of from about 1.5 to about 8.0; and
Specification