| abstract |
A hair treatment method comprising the steps A or B, wherein the hair is shaped at one or more points. Step A: A first agent containing a reducing agent, a second agent containing an oxidizing agent and having a buffering capacity and having a pH of 1 to 5 are sequentially applied to the hair, washed with water and dried (the first agent or the second agent is an organic acid ( A) or a salt thereof). Step B: A first agent containing a reducing agent, an intermediate treating agent having a buffering capacity and having a pH of 1 to 5, and a second agent containing an oxidizing agent are sequentially applied to hair, washed with water and dried (first agent or intermediate treating agent) Includes the organic acid (A) or a salt thereof). Organic acid (A): a compound comprising a non-aromatic hydrophobic group having a total of 3 to 11 carbon atoms or an aromatic hydrophobic group having a total of 4 to 18 carbon atoms and an acid group such as a sulfo group and a sulfate group. [Effect] An extremely high curly hair straightening effect can be obtained by a simple operation similar to a normal straight perm. Further, after the treatment, the straightened state can be restored or maintained without damaging the hair by daily aftercare. [Selection diagram] None |