申请人:SUNSTAR KABUSHIKI KAISHA
公开号:EP0435012A1
公开(公告)日:1991-07-03
Provided are novel durable 2-part hair dyeing agents composed of a first agent comprising as essential components at least one compound that forms HCO₃‾ by dissociation in water, an alkali generating substantially no irritating odor and a dye for hair and having a pH of 8.2 to 9.0, and a second agent comprising as essential components hydrogen peroxide and a buffer solution and having a pH of 2.0 to 4.0, the weight ratio of the first agent and the second agent to be mixed being such that the pH of the mixture of the two is in a range of from 6.5 to 7.9.
These 2-part hair dyeing agents require only a short dyeing time, create little damage to hair and no irritating or disagreeable odor and have high dyeing effect.
本发明提供了新型耐久性双组分染发剂,其组成为:第一种染发剂,其基本成分包括至少一种在水中离解形成 HCO₃‾的化合物、一种基本上不产生刺激性气味的碱和一种头发用染料,其 pH 值为 8.2 至 9.0;第二种染发剂,其基本成分包括过氧化氢和一种缓冲溶液,其 pH 值为 2.0 至 4.0。第一种染发剂和第二种染发剂的重量比为 6.5 至 7.9。
这些双组分染发剂只需要很短的染色时间,对头发的损害很小,没有刺激性或令人讨厌的气味,而且染色效果很好。