Patent ID: 9707164
Date: 2017-07-18
CPC Classifications: A61K,A61Q

Claim:
1. A powder hair dye composition comprising the following components (A) to (C): (A) sodium percarbonate whose content is 25 to 30 mass %; (B) p-phenylenediamine sulfate; and (C) m-aminophenol sulfate whose content is 1 to 2 mass %, wherein the content of p-phenylenediamine sulfate (B) is at least 7.5 times the content of m-aminophenol sulfate (C) on mass basis, and in a case where an initial 1% pH refers to the pH of a diluent prepared by dissolving the powder hair dye composition in a dissolving liquid in a ratio to be employed at the time of use, immediately followed by 100-fold dilution with water, the initial 1% pH at the time of using the hair dye composition is 8.0 or less.