PROBLEM TO BE SOLVED: To provide a curly hair straightening method which can reduce damage to hair and give a natural finish to the hair when straightening curly hair, and which can reduce the time required to straighten the curly hair.SOLUTION: A curly hair straightening method includes: a first water coating step of coating hair with first water which contains alkaline electrolytic water or an alkaline aqueous solution before coating the hair with a first agent for straightening curly hair which is mixed with a reducing agent and alkaline agent and a second water coating step of coating the hair with second water which contains acidic electrolytic water or an acidic aqueous solution after coating the hair with a second agent for straightening curly hair which is mixed with an oxidizing agent.COPYRIGHT: (C)2015,JPO&INPIT【課題】 縮毛矯正における毛髪へのダメージを軽減して自然な仕上がりを実現し、また、縮毛矯正に要する時間を短縮することができる縮毛矯正方法を提供する。【解決手段】 還元剤およびアルカリ剤が配合された縮毛矯正用第1剤を毛髪に塗布する前に、アルカリ性電解水またはアルカリ性水溶液を含んでなる第1水を毛髪に塗布する第1水塗布工程と、酸化剤が配合された縮毛矯正用第2剤を毛髪に塗布した後に、酸性電解水または酸性水溶液を含んでなる第2水を毛髪に塗布する第2水塗布工程とを有する縮毛矯正方法。【選択図】 図10