| abstract |
PROBLEM TO BE SOLVED: To provide a hair treatment composition and hair treatment that imparts firmness and firmness to hair, improves the durability of dyed hair, and maintains these effects and has a good feeling in use. Provide a way. SOLUTION: A copolymer having a silyl group to which at least one reactive functional group is bonded, preferably a trifunctional silyl group is blended. In the copolymer, a (meth) acrylic acid alkyl ester, a siloxane-containing (meth) acrylic acid ester, an amine-containing (meth) acrylic acid ester and the like can be contained as constituent monomers. It is characterized in that the copolymer is hydrolyzed on hair and crosslinks between the copolymer molecules. |