PROBLEM TO BE SOLVED: To provide a hair treatment method that forms waves exhibiting good elasticity and smooth feel and having strong waving power while preventing damages of hair caused by hair treatment operations using a reducing agent or exhibits excellent curly hair-correcting effects.SOLUTION: The hair treatment method comprises applying a hair treatment agent (hereinafter referred to as a first hair treatment agent) containing 0.5-3 wt.% of cysteamine, 1-6 wt.% of an amino-modified silicone and an oily agent and having a pH of 7.5-11 to hair, leaving it for a given time, subsequently washing it and carrying out a hair reshaping treatment after washing.COPYRIGHT: (C)2008,JPO&INPIT【課題】還元剤を使用する毛髪処理操作に伴う毛髪の損傷を防止しながら弾力性および手触感が良く、かつ高いウエーブ力を有するウエーブを形成可能、あるいは高い縮毛矯正効果を発揮する毛髪処理方法の提供。【解決手段】システアミン濃度が0.5~3重量%のシステアミン、濃度が1~6重量%のアミノ変性シリコーン、および油剤を含有し、pHが7.5~11である毛髪処理剤(以下、第1毛髪処理剤という)を毛髪に付与して一定時間放置した後に洗浄し、該洗浄後に毛髪変形処理することを特徴とする毛髪処理方法。【選択図】なし