Make-up composition

Abstract

A make-up composition is for the skin, is prepared by a process and used in a makeup method. The cosmetic composition is intended for making up the skin. The composition has from 75 to 98% by weight of a powder or a mixture of powders, as well as at least one cosmetically acceptable fatty phase having at least one oil. The composition additionally includes a block copolymer of at least one styrene polymer and of at least one olefin polymer, the olefin being other than styrene, or a mixture of these block copolymers.

1 . Cosmetic composition for making up the skin, said composition comprising from 75 to 98% by weight of a powder or a mixture of powders, at least one cosmetically acceptable lipophilic gel formed by a fatty phase comprising at least one oil; said lipophilic gel comprising a block copolymer of at least one styrene polymer and of at least one olefin polymer, the olefin being other than styrene, or a mixture of the block copolymers. 
     
     
         2 . Composition according to  claim 1 , wherein said block copolymer is a diblock or triblock copolymer. 
     
     
         3 . Composition according to  claim 1 , wherein said olefin polymer comprises, as monomer, an olefin selected from the group consisting of ethylene, propylene, butylene, butadiene and isoprene. 
     
     
         4 . Composition according to  claim 1 , wherein said copolymer is a block copolymer of a styrene polymer and of an olefin polymer, the olefin being other than styrene, selected from the group consisting of an ethylene/propylene/styrene copolymer, an ethylene/butylene/styrene copolymer, a styrene/butadiene copolymer, an isoprene/styrene copolymer, a styrene/butadiene/styrene copolymer, a styrene/isoprene/styrene copolymer, a styrene/ethylene/butylene/styrene copolymer, or any mixture of copolymers. 
     
     
         5 . Composition according to  claim 1 , wherein said copolymer is a mixture of ethylene/propylene/styrene and butylene/ethylene/styrene copolymers. 
     
     
         6 . Composition according to  claim 1 , wherein the copolymer is a partially or completely hydrogenated or non-hydrogenated copolymer. 
     
     
         7 . Composition according to  claim 1 , wherein the copolymer is an ethylene/propylene/styrene or butylene/ethylene/styrene copolymer or their mixtures, said copolymer being optionally hydrogenated. 
     
     
         8 . Composition according to  claim 1 , wherein the block copolymer or the mixture of block copolymers represents up to 5% by weight of the composition. 
     
     
         9 . Composition according to  claim 1 , wherein the oil is selected from oils of animal, vegetable or mineral origin, linear or branched hydrocarbons, optionally branched or unsaturated fatty acids, optionally branched or unsaturated fatty alcohols, mono- or polyesters of fatty acids or of fatty alcohols, perfluorinated or organofluorinated oils, volatile or non-volatile silicone oils, fluorosilicone oils and their mixtures. 
     
     
         10 . Composition according to  claim 1 , wherein the oil choice is selected from at least one oil from hydrogenated polyisobutene, isononyl isononanoate or a jojoba seed oil. 
     
     
         11 . Composition according to  claim 1 , wherein the oil constitutes up to 100% of the fatty phase, and more than 85% by weight of the fatty phase. 
     
     
         12 . Composition according to  claim 1 , wherein the fatty phase of said composition comprises one or more other fatty substances chosen from waxes or pasty fatty substances. 
     
     
         13 . Composition according to  claim 1 , wherein said powder or said mixture of powders comprises a coloring agent. 
     
     
         14 . Composition according to  claim 11 , wherein said coloring agent comprises, at least one pigment and at least one filler, or is composed of a mixture of at least one pigment and of at least one filler. 
     
     
         15 . Composition according to  claim 1 , wherein the composition comprises adjuvants, preservatives, antioxidants, fragrances, and one or more cosmetically active agents. 
     
     
         16 . Composition according to  claim 1 , wherein the composition is a blush, eye shadow, foundation, make-up base, gloss or an anhydrous lip product. 
     
     
         17 . Process for the preparation of a composition according to  claim 1 , wherein the process comprises the following steps:
 preparing a powder or a mixture of powders,   preparing a lipophilic gel formed by dispersion of the block copolymer or of a mixture of the block copolymers in at least one fatty phase comprising an oil,   bringing the powder into contact with said lipophilic gel to bind the particles of said powder and to form a homogeneous pulverulent mass,   shaping the pulverulent mass obtained.   
     
     
         18 . Process according to  claim 17 , wherein the step of formation of the gel comprises a step of bringing the copolymer into contact with an oil used as a dispersing agent for said polymer and then a mixing step to render said dispersion homogeneous. 
     
     
         19 . Process according to  claim 17 , wherein the step of formation of the gel comprises diluting the gel with an oil to reduce the viscosity of the gel. 
     
     
         20 . Process according to  claim 19 , wherein the oil for diluting the gel is the same oil as the dispersing agent for the copolymer. 
     
     
         21 . Process according to  claim 17 , wherein the process comprises a drying step, to remove any trace of a volatile compound, or a cooking step, said step succeeding the step of shaping the pulverulent mass. 
     
     
         22 . Method for preparing a composition comprising from 75 to 98% by weight of a powder or of a mixture of powders, with respect to the weight of the total composition wherein said method comprises using a lipophilic gel comprising at least one cosmetically acceptable fatty phase, said fatty phase comprising at least one oil, said lipophilic gel additionally comprising a block copolymer of at least one styrene polymer and of at least one olefin polymer, the olefin being other than styrene, or a mixture of these block copolymers for the preparation of said composition. 
     
     
         23 . A pulverulent mass comprising from 75 to 98% by weight of a powder or a mixture of powders, with respect to the weight of the total pulverulent mass, and at least one cosmetically acceptable lipophilic gel comprising a fatty phase, said fatty phase having at least one oil, said lipophilic gel additionally comprising a block copolymer of at least one styrene polymer and at least one olefin polymer, the olefin being other than styrene, or a mixture of these block copolymers. 
     
     
         24 . Make-up method, wherein the method comprises the application, to the skin, of a composition as defined in  claim 1 .