PROBLEM TO BE SOLVED: To provide a hair cosmetic, a hair breach, a hairdye, a hair breach product and a hairdye product with which soft touch and effective breaching or dyeing can be achieved without generating an irritating odor. ;SOLUTION: A breaching agent 1a containing polyoxyethylene(5)behenyl ether having a HLB of 7, polyoxyethylene(10)behenyl ether having a HLB of 10, cetyl alcohol, behenyl alcohol and ammonia, and an oxidizing agent (a second agent) containing hydrogen peroxide are prepared. The bleaching agent and the oxidizing agent are combined to form the two-part hair bleach product.;COPYRIGHT: (C)2003,JPO
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