PROBLEM TO BE SOLVED: To provide an odor reducing agent composition for hair cosmetics that reduces an unpleasant odor occurring during and/or after the application of an oxidation hair dye, a hair deforming agent and others.SOLUTION: The present invention provides an odor reducing agent composition for hair cosmetics comprising (A) at least one quaternary ammonium salt represented by the formula, and (B) at least one C2-6 polyhydric alcohol.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】酸化染毛剤、毛髪変形剤などの施術中及び/又は施術後に発生する不快臭低減剤組成物の提供。【解決手段】(A)式で表される第4級アンモニウム塩の一種以上、及び(B)C2~6の多価アルコールの一種以上、を含有する毛髪化粧料用臭気低減剤組成物。【選択図】なし