This invention provides a solubilized composition in which a carboxy-modified silicone is solubilized in a large amount and stably. The solubilized composition is characterized by consisting of (a) one or more nonionic surfactant(s), having a weighted average of the HLB value of 10 to 15, selected from polyoxyethylene alkyl ether type nonionic surfactant represented by the following formula (I) or (II): wherein R1 represents a branched chain alkyl group having 8 to 18 carbon atoms; a represents an integer satisfying 3≦a≦40; any one or more of R2, R3 and R4 are each a branched chain alkyl group having 8 to 18 carbon atoms and the other(s) is a hydroxy group; and b, c and d each represent an integer satisfying 3≦b+c+d≦40,(b) a carboxy-modified silicone, and(c) water, andwherein the amount of (b) the carboxy-modified silicone is three times or less the weight of (a) the nonionic surfactant(s).