Patent ID: 8298519

Claim:
A hair treatment shampoo composition comprising: a) 8 to 16% by wt. of an anionic surfactant selected from the group consisting of sodium lauryl sulphate, sodium lauryl ether sulphate, ammonium lauryl sulphate and ammonium lauryl ether sulphate; b) 1 to 4% by wt. of an amphoteric or zwitterionic cosurfactant; c) 50 to 90% water; and d) 0.1 to 5% by wt. of a hair substantive polymer, the hair substantive polymer comprising a polymeric backbone bearing: (i) at least one side chain which is formed from a hair fibre targeting group which is covalently linked to the polymeric backbone, the hair fibre targeting group being a non-cationic species which is capable of specifically interacting with the protein surface of the hair fibre in a non-covalent interaction having a bond energy ranging from 0.5 to 3 Kcal/mol, when the composition is applied to hair; wherein the hair fibre targeting group comprises a partial ester of poly(hydroxyethylacrylate) with 3,4-dihydroxybenzoic acid, a partial ester of poly(hydroxyethylmethacrylate) with 3,4-dihydroxybenzoic acid or mixtures thereof; (ii) optionally, at least one side chain different from side chain (i) and which different side chain comprises a hair benefit agent.