An aqueous composition used for cosmetics, characterized in that the composition comprises 0.5 to 50 wt %, based on weight of the composition, of a copolymer having main chains comprising the repeating units represented by the following formula (1), the repeating units represented by the following formula (2), and the repeating units represented by the following formula (3), said main chains being crosslinked by a compound or oligomer having 2 to 6 (meth)acryl groups