To provide a cosmetic sebum collapse evaluating method and a cosmetic sebum collapse evaluating device that enable cosmetic sebum collapse to be evaluated more properly and more easily.SOLUTION: A cosmetic sebum collapse evaluating method includes the steps of: applying a composition (A) containing fatty acid (a) to an application object; additionally applying a cosmetic (B) to the applied composition (A); and making an evaluation after the surface temperature of an application body has risen. In a cosmetic sebum collapse evaluating device, the composition (A) containing fatty acid (a) and the cosmetic (B) are laminated in this order on an application object.SELECTED DRAWING: Figure 1【課題】本発明は、化粧料の皮脂崩れをより適切に且つより簡便に評価することを可能にする化粧料の皮脂崩れ評価方法及び化粧料の皮脂崩れ評価装置を提供することを目的とする。【解決手段】被塗布体に脂肪酸(a)を含む組成物(A)を塗布し、塗布された前記組成物(A)に化粧料(B)をさらに塗布し、塗布体の表面温度が昇温した後に評価を行う、化粧料の皮脂崩れ評価方法、及び、被塗布体に脂肪酸(a)を含む組成物(A)及び化粧料(B)がこの順に積層されている、化粧料の皮脂崩れ評価装置。【選択図】図1