Compositions for treating keratinous materials containing a combination of a zwitterion polymer and a water insoluble non-volatile silicon

A process for the cosmetic treatment of a keratin substance, comprising:

• applying to a wet keratin substance a cosmetic or dermatological composition, comprising, in a cosmetically or dermatologically acceptable aqueous medium,
• a) at least one zwitterionic polymer resulting from the copolymerization of at least one monomer of formula (I):
• in which R1 and R2, which are identical or different, are chosen from a hydrogen atom and a methyl radical, and R3, R4 and R5, which are identical or different, are chosen from linear and branched alkyl radicals containing from 1 to 4 carbon atoms,
• Z is chosen from an NH group and an oxygen atom,
• n is an integer from 2 to 5,
• A− is an anion of an organic or inorganic acid,
• with at least one monomer of formula (II):
• R6—CH═CR7—COOH (II)
• in which R6 and R7, which are identical or different, are chosen from a hydrogen atom and a methyl radical;
• wherein said at least one zwitterionic polymer is soluble in water to a concentration of 1% by weight at a pH below 6 and at 20° C.;
• and
• b) at least one non-amino, non-volatile, water-insoluble silicone having a viscosity of greater than 300 centistokes,
• optionally leaving said cosmetic or dermatological composition on said wet keratin substance for a period of time;
• and
• rinsing out said cosmetic or dermatological composition with water.

A process for enhancing the conditioning effect of a non-amino, non-volatile, water-insoluble silicone in a rinse-out composition comprising said silicone, wherein said process comprises adding to said composition at least one zwitterionic polymer resulting from the copolymerization of at least one monomer of formula (I):

• in which R1 and R2, which are identical or different, are chosen from a hydrogen atom and a methyl radical, and R3, R4 and R5, which are identical or different, are chosen from linear and branched alkyl radicals containing from 1 to 4 carbon atoms,
• Z is chosen from an NH group and an oxygen atom,
• n is an integer from 2 to 5,
• A− is an anion of an organic or inorganic acid,
• with at least one monomer of formula (II):
• R6—CH═CR7—COOH (II)
• in which R6 and R7, which are identical or different, are chosen from a hydrogen atom and a methyl radical;
• wherein said at least one zwitterionic polymer is soluble in water to a concentration of 1% by weight at a pH below 6 and at 20° C.;
• wherein said composition, after said adding, further comprises a washing base present in an amount ranging from 4 to 30% by weight relative to the total weight of the composition, wherein the washing base comprises at least one surfactant.

A cosmetic or dermatological rinse-out composition, comprising, in a cosmetically or dermatologically acceptable aqueous medium,

• a) at least one zwitterionic polymer resulting from the copolymerization of at least one monomer of formula (I):
• in which R1 and R2, which are identical or different, are chosen from a hydrogen atom and a methyl radical, and R3, R4 and R5, which are identical or different, are chosen from linear and branched alkyl radicals containing from 1 to 4 carbon atoms,
• Z is chosen from an NH group and an oxygen atom,
• n is an integer from 2 to 5,
• A− is an anion of an organic or inorganic acid,
• and at least one monomer of formula (II):
• R6—CH═CR7—COOH (II)
• in which R6 and R7, which are identical or different, are chosen from a hydrogen atom and a methyl radical;
• wherein said at least one zwitterionic polymer is soluble in water to a concentration of 1% by weight at a pH below 6 and at 20° C.;
• and
• b) at least one non-amino, non-volatile, water-insoluble silicone having a viscosity of greater than 300 centistokes.