PROBLEM TO BE SOLVED: To provide an oil for a cosmetic which can be utilized for various purposes such as a lip rouge, a lip cream, a lip gloss, a lipstick, a blusher, a foundation or an eye color, by developing an easily-producible oil having gloss, luster or adhesiveness to skin.SOLUTION: An oil for a cosmetic is composed of polyglycerol having an average polymerization degree of 5-20 in which the content of a glycerol polymer having a polymerization degree of ≤3 is <10%, and an esterified product whose esterification rate is in the range of 20-70 wt.%, and which is obtained by performing esterification by using at least one kind or more of 8-22C fatty acids which are liquid at 20°C. A cosmetic combining the oil for the cosmetic is used.COPYRIGHT: (C)2013,JPO&INPIT【課題】艶や光沢、皮膚への密着性があり、容易に製造できる油剤を開発し、口紅、リップクリーム、リップグロス、リップスティック、頬紅、ファンデーション、アイカラー等幅広い用途に利用が可能な化粧料用油剤を提供する。【解決手段】重合度3以下のグリセリン重合物の含有量が10%未満であり、且つ平均重合度が5~20のポリグリセリンと、20℃で液状の炭素数8~22の脂肪酸を少なくとも1種以上用いてエステル化し、そのエステル化率が20~70重量%の範囲であるエステル化物からなる化粧料用油剤及びそれを配合した化粧料を用いる。【選択図】 なし