PROBLEM TO BE SOLVED: To provide a cosmetic for hair bleaching or hair dyeing capable of discharging stable and excellent foamy matter from a foamer container even at a low temperature or a high temperature, or even when stored for a long period of time.SOLUTION: A cosmetic for hair bleaching or hair dyeing comprises: a first agent containing an alkali agent； a second agent containing hydrogen peroxide； and a non-aerosol type foamer container for discharging a mixture comprising the first agent and the second agent in a foam state. The second agent comprises a component (A) of saturated aliphatic alcohol including a component (A1) of R-OH and a component (A2) of R-OH, in which Rrepresents a linear alkyl group having the carbon number of 12 to 18, and Rrepresents a linear alkyl group having the carbon number of 19 to 24.【課題】低温時でも高温時でも、また長期保存された場合にも、安定して良好な泡状物をフォーマー容器から吐出することができる毛髪脱色用又は染毛用化粧品の提供。【解決手段】アルカリ剤を含有する第１剤、過酸化水素を含有する第２剤、及び第１剤と第２剤を含有する混合液を泡状に吐出するためのノンエアゾールタイプのフォーマー容器を備え、第２剤中に次の成分(A)を含有する、毛髪脱色用又は染毛用化粧品。(A) 次の成分(A1)及び(A2)を含む飽和脂肪族アルコール(A1) Ｒ1-ＯＨ(A2) Ｒ2-ＯＨ〔Ｒ1は炭素数12～18の直鎖のアルキル基を示し、Ｒ2は炭素数19～24の直鎖のアルキル基を示す。〕【選択図】なし
