Permanent wave agent composition having dyeing effect and method for dyeing hair using the same

摘要

A second agent composition for permanent wave treatment having a dyeing effect and a method for dyeing the hair which has been permanently waved. More particularly, a second agent composition for permanent wave treatment comprising a cationic dye having a quaternary nitrogen atom, which is optionally delocalizable, and a -X=N- bond wherein X represents a nitrogen atom or a -CH- bond, and a method for dyeing the hair which has been subjected to a permanent wave treatment using the cationic dye.