PROBLEM TO BE SOLVED: To provide a method for suppressing a reaction smell, by which the olfactorily complicated content reaction smells (residual smells) can well be suppressed during and after the treatment of an alkali agent-containing hair cosmetic.SOLUTION: Provided is the method for suppressing the reaction smell, characterized by using a hair cosmetic composition comprising (A) one or more &ge12C fatty acids, (B) one or more oily components selected from waxes, hydrocarbons and esters and having an octanol/water distribution coefficient (log Kow) of &ge10, (C) a perfume comprising one or more specific perfume compounds, and (D) one or more alkali agents as a hair cosmetic, in a hair treatment including the employment of the hair cosmetic containing an alkali agent.COPYRIGHT: (C)2010,JPO&INPIT【課題】アルカリ剤を含有する毛髪化粧料の処理中及び処理後における、嗅覚的に複雑な内容の反応臭(残臭)を良好に抑制できる反応臭抑制方法を提供する。【解決手段】アルカリ剤を含有する毛髪化粧料の使用を含む毛髪処理において、毛髪化粧料として(A)炭素数12以上の脂肪酸の1種以上、(B)オクタノール/水分配係数(logKow)が10以上であるロウ、炭化水素及びエステルから選ばれる油性成分の1種以上、(C)特定の香料化合物の1種以上を含む香料、(D)アルカリ剤の1種以上、を含有する毛髪化粧料組成物を用いる反応臭抑制方法。【選択図】なし
