The cosmetic composition of this invention which is a 2-methacryloyloxyethylphosphorylcholine polymer (Poly MPC) in a preferable amount of 0.001% to 10% by weight based on the total weight of the cosmetic composition. The cosmetic composition can repair damage to the skin and hair, such as dryness, loss of luster, etc. and enhance the moisture preservation capability thereof. It also has a good feel when applied.
A composition for hydrogels which comprises (A1) a copolymer which comprises 25 to 97 mol % of unit (a) derived from a compound represented by formula (1) and 3 to 75 mol % of unit (b) derived from a monomer represented by formula (2) and is soluble in aqueous media and (B) a polymer which has hydrophilic groups such as hydroxyl or carboxyl groups and is soluble in aqueous media; and a hydrogel comprising the composition. (X represents a divalent organic residue; Y represents alkyleneoxy, etc.; Z, R.sup.1, R.sup.2, R.sup.3, R.sup.4, and L.sup.2 each represents hydrogen, etc.; and L.sup.1 represents --C.sub.6 H.sub.4 --, etc.) ##STR1##
