Hair bleach or hair dye

Abstract

An oxidative hair bleach or hair dye comprising a first pack with an alkalizing agent contained therein and a second pack with an oxidizing agent contained therein, wherein the oxidative hair bleach or hair dye comprises the following ingredients (A), (B), (C) and (D) in the following proportions in a whole composition after mixing the first pack and the second pack together, and has a pH of from 8 to 12: (A) a water-miscible organic solvent having an octanol-water distribution coefficient (log P) at 25° C. of 0.3 or greater and a molecular weight of 200 or lower: 8 to 40 wt. % (B) the alkalizing agent: 0.1 to 10 wt. % (C) the oxidizing agent: 0.1 to 12 wt. % as calculated in terms of hydrogen peroxide (D) water: 25 to 70 wt. %. This hair bleach or hair dye has excellent bleaching power and can color hair into a light tone and a good shade, and has a reduced irritating odor and is low in irritation to the scalp.

Dependencies are inferred from the claim text.