Cosmetic composition comprising at least one film-forming polymer and at least one regulator

Abstract

The invention concerns a cosmetic composition comprising, in a cosmetically acceptable medium, at least a film-forming polymer (A) with particular characteristics and at least an additive (B), the latter being selected such that the film formed on the hair after the cosmetic composition has been applied retains its mechanical properties whatever the hygrometric conditions. The invention also concerns a hair care or hair styling method using said composition and its use for the formulation of cosmetic products such as lacquers, sprays or foams, for hair care or hair styling.

1 - 14 . (Canceled)  
     
     
         15 . A cosmetic composition comprising: 
 (1) at least one film-forming polymer (A), wherein a film obtained by drying a mixture of said at least one film-forming polymer (A) with ethanol or water, under a humid atmosphere, has a mechanical profile defined by at least: 
 (i) an elongation at break (ε r ) of greater than or equal to about 160%; and  
 (ii) a recovery at 300 seconds (R 300 ) of greater than or equal to about 45%; and  
   (2) at least one additive (B) chosen from alkyl ethers of an alkylene glycol and of a polyalkylene glycol chosen from diethylene glycol ethyl ether, diethylene glycol methyl ether, diethylene glycol butyl ether, diethylene glycol hexyl ether, dipropylene glycol butyl ether, tripropylene glycol butyl ether, dipropylene glycol ethyl ether, tripropylene glycol methyl ether and diethylene glycol methyl ether.    
     
     
         16 . The composition according to  claim 15 , further comprising a cosmetically acceptable medium.  
     
     
         17 . The composition according to  claim 15 , wherein said at least one film-forming polymer (A) is present at a concentration ranging from about 0.05% to about 20% by weight, relative to the total weight of the composition.  
     
     
         18 . The composition according to  claim 17 , wherein said at least one film-forming polymer (A) is present at a concentration ranging from about 0.1% to about 15% by weight, relative to the total weight of the composition.  
     
     
         19 . The composition according to  claim 18 , wherein said at least one film-forming polymer (A) is present at a concentration ranging from about 0.25% to about 10% by weight, relative to the total weight of the composition.  
     
     
         20 . The composition according to  claim 15 , wherein said at least one additive (B) is present at a concentration ranging from about 0.05% to about 20% by weight, relative to the total weight of the composition.  
     
     
         21 . The composition according to  claim 20 , wherein said at least one additive (B) is present at a concentration ranging from about 0.1% to about 15% by weight, relative to the total weight of the composition.  
     
     
         22 . The composition according to  claim 21 , wherein said at least one additive (B) is present at a concentration ranging from about 0.25% to about 10% by weight, relative to the total weight of the composition.  
     
     
         23 . The composition according to  claim 15 , wherein the ratio of the concentration of said at least one film-forming polymer (A) to the concentration of said at least one additive (B) ranges from about 4000:1 to about 0.002:1.  
     
     
         24 . The composition according to  claim 15 , further comprising at least one cosmetic additive chosen from thickeners; anionic, nonionic, cationic and amphoteric surfactants; fragrances; preserving agents; sunscreens; proteins; vitamins; provitamins; fixing and non-fixing, anionic, nonionic, cationic and amphoteric polymers other than those defined in claim  75 ; mineral, plant and synthetic oils; ceramides; pseudoceramides; and any other suitable additive used in cosmetic compositions.  
     
     
         25 . A process for preparing a cosmetic composition, said process comprising combining at least one additive (B) and at least one film-forming polymer (A) in a cosmetic composition, wherein a film obtained by drying a mixture of said at least one film-forming polymer (A) with ethanol or water, under a humid or dry atmosphere, has a mechanical profile defined by at least: 
 (i) an elongation at break (εr) of greater than or equal to about 160%; and    (ii) a recovery at 300 seconds (R 300 ) of greater than or equal to about 45%, and    wherein said at least one additive (B) is chosen from alkyl ethers of an alkylene glycol and of a polyalkylene glycol chosen from diethylene glycol ethyl ether, diethylene glycol methyl ether, diethylene glycol butyl ether, diethylene glycol hexyl ether, dipropylene glycol butyl ether, tripropylene glycol butyl ether, dipropylene glycol ethyl ether, tripropylene glycol methyl ether and diethylene glycol methyl ether.    
     
     
         26 . A process for obtaining a film, obtained by drying a mixture of at least one film-forming polymer (A) with ethanol or water, under a humid atmosphere, wherein said film has a mechanical profile defined by at least one of: 
 (i) an elongation at break (ε r ) of greater than or equal to 160%; and    (ii) a recovery at 300 seconds (R 300 ) of greater than or equal to 45%; comprising combining said at least one film-forming polymer (A) with at least one additive (B) chosen from alkyl ethers of an alkylene glycol and of a polyalkylene glycol chosen from diethylene glycol ethyl ether, diethylene glycol methyl ether, diethylene glycol butyl ether, diethylene glycol hexyl ether, dipropylene glycol butyl ether, tripropylene glycol butyl ether, dipropylene glycol ethyl ether, tripropylene glycol methyl ether and diethylene glycol methyl ether.