PROBLEM TO BE SOLVED: To provide a temporary hair dyeing composition which exhibits a good hair dyeing property, gives a good feeling to the hair after dyeing and maintains a good hair dyeing property and operability over a long period because of having excellent dispersion stability of a pigment.SOLUTION: There is provided a temporary hair dyeing composition which comprises the following components: (A) carbon black, (B) a (methacryloyloxyethylcarboxybetaine/alkyl methacrylate) copolymer and (C) an organopolysiloxane in which a poly(N-acylalkylene imine) segment composed of a repeating unit represented by following formula (1) [R1 is an alkyl group having 1 to 22 caron atms, an aralkyl group or an aryl and n is 2 or 3] is bonded to at least two silicon atoms of an organopolysiloxane segment constituting the main chain via an alkylene group containing a hetero atom.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】良好な染毛性を示し、染毛後の毛髪が好感触で、同時に顔料の分散安定性に優れるため長期間にわたって良好な染毛性や操作性が維持される一時染毛料組成物の提供。【解決手段】次の成分(A)～(C)を含有する一時染毛料組成物。 (A) カーボンブラック (B) （メタクリロイルオキシエチルカルボキシベタイン／メタクリル酸アルキル）コポリマー (C) 主鎖を構成するオルガノポリシロキサンセグメントのケイ素原子の少なくとも２つに、ヘテロ原子を含むアルキレン基を介して、下記一般式(1)；〔Ｒ1はＨ、Ｃ1-22のアルキル基、アラルキル基又はアリール基。ｎは２又は３。〕で表される繰り返し単位からなるポリ（N-アシルアルキレンイミン）セグメントが結合してなるオルガノポリシロキサン【選択図】なし
