PROBLEM TO BE SOLVED: To provide a hair treatment method capable of, for example, ameliorating the hair waviness accompanying aging by temporarily shaping the hair.SOLUTION: There is provided a hair treatment method comprising the following steps (i) and (ii) in order: step (i): a step of applying a composition containing the following component (A) to the hair [wherein, the broken line represents the presence or absence of a π bond, R1 represents a hydroxyl group or an acetoxy group, R2 represents a hydrogen atom or -COOR (R is a hydrogen atom, a methyl group or an ethyl group) and R3 represents a hydrogen atom, an acetyl group, a methyl group or an ethyl group)； and step (ii): a step of applying a shape to the hair at a temperature of less than 140°C.SELECTED DRAWING: NoneCOPYRIGHT: (C)2020,JPO&INPIT【課題】毛髪に一時的な形付けを行うことにより、例えば加齢に伴う毛髪のうねりを緩和することができる毛髪処理方法を提供する。【解決手段】下記工程（ｉ）及び工程（ｉｉ）を順に有する毛髪処理方法。工程（ｉ）：次の成分（Ａ）を含む組成物を毛髪に塗布する工程（Ａ）下記一般式（１）で表される化合物又はその塩〔式中、破線はπ結合の存在又は不存在を示す。Ｒ１は水酸基又はアセトキシ基を示す。Ｒ２は水素原子、又は－ＣＯＯＲ（Ｒは水素原子、メチル基又はエチル基）を示す。Ｒ３は水素原子、アセチル基、メチル基又はエチル基を示す。〕工程（ｉｉ）：１４０℃未満の温度で毛髪に形状を付与する工程【選択図】なし
