To provide high quality cosmetic compositions that can solubilize oil by adding a little amount of a solubilizer and provide a good feeling of use and transparent product properties, in prescriptions containing surfactants such as a shampoo and a body wash.SOLUTION: Provided is a cosmetic composition containing: (A) oil； (B) a chained or linear vinyl copolymer which has (b1) a structural unit derived from a vinyl monomer having a hydrophilic group represented by the following (formula 1) and the like, and (b2) a structural unit derived from a vinyl monomer having a hydrophobic group represented by the following (formula 5)； (C) a surfactant； and water. The content of the oil (A) is 0.1-10% by mass, the content of the vinyl polymer (B) is 0.001 to 1% by mass, the content of the water is 50-95% by mass, and the transmittance of light with a wavelength of 655 nm is 90% or more. CH=C(R)-COO-(CH)-NRRR(formula 1) CH=C(R)-COOR(formula 5).SELECTED DRAWING: None【課題】シャンプーやボティソープ等界面活性剤が含まれる処方において、少量の可溶化剤の添加でオイルを可溶化することができ、良好な使用感と透明な製品性状が得られる高品質の化粧料組成物を提供する。【解決手段】オイル（Ａ）と、下記（式１）等で表される親水性基を有するビニル系単量体由来の構造単位（ｂ１）と、下記（式５）で表される疎水性基を有するビニル系単量体由来の構造単位（ｂ２）とを有し、鎖状もしくは線状であるビニル系共重合体（Ｂ）と、界面活性剤（Ｃ）と、水とを含む化粧料組成物。オイル（Ａ）の含有量が０．１～１０質量％、ビニル系重合体（Ｂ）の含有量が０．００１～１質量％、水の含有量が５０～９５質量％で、波長６５５ｎｍの光の透過率が９０％以上。 ＣＨ２＝Ｃ（Ｒ１）－ＣＯＯ－（ＣＨ２）ｍ－Ｎ＋Ｒ２Ｒ３Ｒ４ （式１） ＣＨ２＝Ｃ（Ｒ１４）－ＣＯＯＲ１５（式５）【選択図】なし
