To provide a cosmetic composition containing a biodegradable resin particle having a structure with excellent biodegradability.SOLUTION: The present invention provides a cosmetic composition containing biodegradable resin particles, wherein, in a cross-section image of scan transmission electron microscopy, one or more single holes are observed inside a particle, wherein, each particle includes at least five single holes having D2/D1 of 0.05 or more and 0.20 or less with the total of the major axis and the minor axis of the particle defined as D1 and the total of the major axis and the minor axis of the single hole defined as D2.SELECTED DRAWING: Figure 1【課題】生分解性に優れた構造を有する生分解性樹脂粒子を含む、化粧料用組成物を提供する。【解決手段】走査透過電子顕微鏡による断面写真において粒子内部に１つ以上の単孔が観察され、粒子長径と粒子短径の合計をＤ１とし、単孔長径と単孔短径の合計をＤ２とした時、Ｄ２／Ｄ１が０．０５以上、０．２０以下となる単孔を粒子１つあたり５個以上有する生分解性樹脂粒子を含む、化粧料用組成物。【選択図】図１
