Cosmetic and personal care compositions

Abstract

Cosmetic or personal care compositions comprise from 0.01% to 10% by weight of a hair styling polymer comprising one or more hydrophobic groups, from 0.001% to 10% by weight of an optionally substituted cyclodextrin and a cosmetically acceptable diluent or carrier. The cyclodextrin complexes with the hydrophobic groups to increase the solubility of the hair styling polymer in the composition. The cyclodextrin thus allows the formulation of compositions with relatively higher water contents.

1 . Cosmetic or personal care composition comprising from 0.01% to 10% by weight of a hair styling polymer comprising one or more hydrophobic groups, from 0.001% to 10% by weight of an optionally substituted cyclodextrin and a cosmetically acceptable diluent or carrier, wherein the optionally substituted cyclodextrin complexes with the hydrophobic groups to increase the solubility of the hair styling polymer in the composition.  
     
     
         2 . Composition as claimed in  claim 1  which is a hair styling composition.  
     
     
         3 . Composition as claimed in  claim 1 , wherein the optionally substituted cyclodextrin is present in an amount of from 0.01 to 1% by weight.  
     
     
         4 . Composition as claimed in  claim 1 , wherein the cyclodextrin is an α-, β- or γ-cyclodextrin, optionally substituted.  
     
     
         5 . Composition as claimed in  claim 4 , wherein the cyclodextrin is α-cyclodextrin.  
     
     
         6 . Composition as claimed in  claim 4 , wherein the cyclodextrin is β-cyclodextrin sulphate or a salt thereof.  
     
     
         7 . Composition as claimed in  claim 1 , wherein the hair styling polymer comprises hydrophobic groups selected from: C 1 -C 24  alkyl, C 2 -C 24  alkenyl or C 2 -C 24  alkynyl; C 1 -C 24  alkyl, C 2 -C 24  alkenyl or C 2 -C 24  alkynyl, optionally substituted with aryl and mixtures thereof.  
     
     
         8 . Composition as claimed in  claim 1 , wherein the hair styling polymer comprises carboxylic acid groups and/or salts thereof and/or esters thereof with C 1 -C 12  alcohols and/or amides thereof with C 1 -C 12  amines.  
     
     
         9 . Composition as claimed in  claim 1 , wherein the hair styling polymer is present in an amount of from 0.1% to 10% by weight.  
     
     
         10 . Composition as claimed in  claim 1 , which further comprises silicone in an amount of from 0.01% to 10% by weight.  
     
     
         11 . Composition as claimed in  claim 1  which further comprises an alkaline neutralising agent for the polymer.  
     
     
         12 . Composition as claimed in  claim 1 , wherein the carrier comprises ethanol and/or water.  
     
     
         13 . Composition as claimed in  claim 12 , wherein the composition comprises at least 40% by weight water.  
     
     
         14 . Composition as claimed in  claim 1 , which is packaged in the form of a pump spray.  
     
     
         15 . A hair spray composition comprising: 
 (i) from 0.01% to 10% by weight of a hair styling polymer comprising one or more hydrophobic groups;    (vii) from 0.001% to 10% by weight of an optionally substituted cyclodextrin;    (viii) optionally, from 0.001% to 10% by weight of a neutraliser;    (ix) optionally, from 0.01% to 5% by weight of a silicone;    (x) at least 20% by weight water; and    (xi) up to 50% by weight of a propellant,    wherein the optionally substituted cyclodextrin complexes with the hydrophobic groups to increase the solubility of the hair styling polymer in the composition.    
     
     
         16 . Cosmetic or personal care composition comprising from 0.01% to 10% by weight of a hair styling polymer comprising one or more hydrophobic groups selected from: C 6 -C 24  alkyl, C 6 -C 24  alkenyl or C 6 -C 24  alkynyl; C 6 -C 24  alkyl, C 6 -C 24  alkenyl or C 6 -C 24  alkynyl, optionally substituted with aryl and mixtures thereof, from 0.001% to 10% by weight of an optionally substituted cyclodextrin and a cosmetically acceptable diluent or carrier.  
     
     
         17 . Composition as claimed in  claim 16 , wherein the cyclodextrin is an α-, β- or γ-cyclodextrin, optionally substituted.  
     
     
         18 . Use of an optionally substituted cyclodextrin to increase the solubility of a hair styling polymer in a cosmetic or personal care composition.  
     
     
         19 . A cosmetic method of treating hair which comprises applying to the hair a composition of  claim 1.