US Patent 10039939 Sulfate-free cleansing composition with thickener

Disclosed is an aqueous cleansing composition comprising (a) at least one anionic surfactant that is not an alkyl sulfate or alkyl ether sulfate, (b) at least one amphoteric surfactant, (c) at least one thickener selected from a hydrophobically-modified acrylic acid based copolymer having a molecular weight from about 80,000 to about 2,500,000 grams per mole, (d) at least one cationic conditioning agent, and (e) optionally at least one nonionic surfactant; wherein the ratio of the anionic surfactant (a) to amphoteric surfactant (b) is less than about 9.5, by weight. Also disclosed are methods of cleaning and conditioning hair using said compositions and methods of making said compositions.