PROBLEM TO BE SOLVED: To provide oily cleansing compositions that lather even under the presence of cosmetics and can wash completely when rinsing, and has low skin irritation, while having sufficient detergency to cosmetics such as a foundation.SOLUTION: The invention provides an oily cleansing composition containing a liquid oil (A) and an ampholytic surfactant (B) represented by formula (1), wherein (A) is 50-99% by weight, and (B) is 1-50% by weight. [In the formula, R1 is an alkenyl group of C10-18 X is O or NH R2 is an alkylene group of C1-5 R3 and R4 are each independently an alkyl group of C1-4 and M+ is a proton, metallic cation, or onium cation].SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】ファンデーションなどの化粧料に対して十分な洗浄力を備えた上で、化粧料存在下でもすすぎ時に泡が立ちさっぱりと洗い上げることができ、かつ皮膚刺激性が低い油性クレンジング用組成物を提供する。【解決手段】液状油(A)及び式(1)で表される両性界面活性剤(B)を含有する油性クレンジング用組成物であって、(A)が50~99重量%であり、(B)が1~50重量%である油性クレンジング用組成物。[R1はC10~18のアルケニル基;XはO又はNH;R2はC1~5のアルキレン基;R3及びR4は各々独立にC1~4のアルキル基;M+はプロトン、金属カチオン又はオニウムカチオン]【選択図】なし
