The invention provides a method for the cosmetic treatment of one or more keratin fibers, in particular human keratin fibers, especially one or more eyelashes or eyebrows. SOLUTION: The method for cosmetic treatment comprises the step of introducing at least one cosmetic composition using one or more cavities (5) of a mold (2) into which keratin fibers are at least partially introduced. Forming on at least a portion of the keratin fibers. [Selection diagram] Figure 1A【課題】本発明は、1つ又は複数のケラチン繊維、特にヒトケラチン繊維、とりわけ1つ又は複数の睫毛又は眉毛の美容処置のための方法を提供する。【解決手段】美容処置のための方法は、ケラチン繊維が少なくとも部分的に導入される、型(2)の1つ又は複数のキャビティ(5)を用いて、少なくとも1つの化粧用組成物を前記ケラチン繊維の少なくとも一部分上に成形する工程を含む。【選択図】図1A