| abstract |
[PROBLEMS] To provide a first agent for oxidative hair dyeing agent capable of enhancing the blue color saturation of hair in hair, and a hair dyeing method using an oxidative dyeing agent. (B) 2,4-diaminophenoxyethanol, (C) dialkyl phosphate (C1), and polyoxyethylene alkyl ether phosphate, (C2) 2- (A) / (B), wherein the ratio of the content of the component (A) to the content of the component (B) is at least one kind selected from the group consisting of a diorganopolysiloxane, a diene chain alkyldimethylammonium salt, and a C3 mono long chain alkyltrimethylammonium salt. )] Is 0.25 or more. |