Composition, Process For Preparation And Method Of Use

Abstract

Depilatory compositions including a depilatory agent, fatty alcohol and VP/hexadecene copolymer that provide increased resistance to rinsing of the compositions from the skin. The compositions provide for a method of depilation in wet conditions using a tool to apply and remove the compositions.

What is claimed is: 
     
         1 . A depilatory composition comprising:
 an emulsion of hydrophobic particles in a continuous aqueous phase;   wherein the continuous aqueous phase comprises a depilatory agent; and   wherein the hydrophobic particles comprise a fatty alcohol and hexadecene copolymer.   
     
     
         2 . The depilatory composition of  claim 1 , wherein the hexadecene copolymer is a VP/hexadecene copolymer having a molecular weight of from about 4,000 to 13,000 mass units. 
     
     
         3 . The depilatory composition of  claim 1 , wherein the hexadecene copolymer is a VP/hexadecene copolymer having a molecular weight in the range 6,500 to 8,500 mass units. 
     
     
         4 . The depilatory composition of  claim 1 , wherein hexadecene copolymer is a polymer with the structure (C 22 H 41 NO) x . 
     
     
         5 . The depilatory composition of  claim 1  comprising from 3 to 20% by weight of fatty alcohol and 0.2 to 5% by weight of an oil gelling agent. 
     
     
         6 . The depilatory composition of  claim 1 , wherein the fatty alcohol has an alkyl chain comprising from 8 to 22 carbon atoms. 
     
     
         7 . The depilatory composition of  claim 1 , wherein the depilatory agent is a sulfhydryl compound. 
     
     
         8 . The depilatory composition of  claim 1  comprising from 1 to 8% by weight of depilatory agent, expressed as the equivalent acid form of the depilatory agent. 
     
     
         9 . The depilatory composition of  claim 1 , wherein the depilatory agent is a sulfhydryl compound; and
 the inclusion of a hexadecene copolymer and a fatty alcohol in a hydrophobic particle provide adherence qualities of the depilatory composition.   
     
     
         10 . The depilatory composition of  claim 9 , wherein the hexadecene copolymer comprises vinylpyrrolidone/hexadecene copolymer;
 wherein the vinylpyrrolidone/hexadecene copolymer is in an amount of about 1.9% by weight of the total composition;   wherein the vinylpyrrolidone/hexadecene copolymer has a molecular weight in the range of 6,500 to 8,500 mass units; and   wherein the vinylpyrrolidone/hexadecene copolymer is a polymer with the structure (C 22 H 41 NO) x .   
     
     
         11 . The depilatory composition of  claim 9 , wherein the inclusion of a hexadecene copolymer and a fatty alcohol in a hydrophobic particle provide adherence qualities of the depilatory composition to hairy skin such that the depilatory composition has a degradation period greater than three minutes, wherein the degradation period is the time the depilatory composition is left in contact with hairy skin to achieve adequate hair degradation even when rinsed or immersed in water. 
     
     
         12 . The depilatory composition of  claim 9 , wherein the inclusion of a hexadecene copolymer and a fatty alcohol in a hydrophobic particle provide adherence qualities of the depilatory composition to an applied surface such that over 60% of the depilatory composition remains on a surface when subjected to three minutes of running water. 
     
     
         13 . The depilatory composition of  claim 9 , wherein the inclusion of a hexadecene copolymer and a fatty alcohol in a hydrophobic particle provide adherence qualities of the depilatory composition to an applied surface such that over 60% of the depilatory composition remains on a surface when subjected to five minutes of running water. 
     
     
         14 . A kit for hair removal comprising:
 a depilatory tool; and   the depilatory composition of  claim 1 ;   wherein the depilatory tool comprises a first side arranged to apply a depilatory composition, and a second side arranged to remove a depilatory composition; and   wherein the first side and the second side are substantially of a different texture and/or color.   
     
     
         15 . The kit of  claim 14 , wherein the hydrophobic particles of the depilatory composition comprise a fatty alcohol and a VP/hexadecene copolymer is a polymer with the structure (C 22 H 41 NO) x  and has a molecular weight of from 6,500 to 8,500 mass units. 
     
     
         16 . The kit of  claim 15 , wherein the depilatory composition comprises from 3 to 20% by weight of fatty alcohol and 0.2 to 5% by weight of an oil gelling agent; and
 wherein the fatty alcohol has an alkyl chain having from 16 to 22 carbon atoms.   
     
     
         17 . The kit of  claim 14 , wherein the depilatory agent of the depilatory composition comprises a cosmetically acceptable salt of thioglycolic acid; and
 wherein the depilatory agent of the depilatory composition comprises from 1 to 8%, by weight of the depilatory composition, expressed as an equivalent acid form of the depilatory agent.   
     
     
         18 . The kit of  claim 14 , wherein the depilatory agent of the depilatory composition is a sulfhydryl compound; and
 the inclusion of a hexadecene copolymer and a fatty alcohol in a hydrophobic particle provide adherence qualities of the depilatory composition.   
     
     
         19 . The kit of  claim 18 , wherein the hexadecene copolymer of the hydrophobic particles comprises vinylpyrrolidone/hexadecene copolymer;
 wherein the vinylpyrrolidone/hexadecene copolymer is in an amount of about 1.9% by weight of the total depilatory composition;   wherein the vinylpyrrolidone/hexadecene copolymer has a molecular weight in the range of 6,500 to 8,500 mass units; and   wherein the vinylpyrrolidone/hexadecene copolymer is a polymer with the structure (C 22 H 41 NO) x .