Solid anhydrous cosmetic compositions, preparation methods, cosmetic treatment methods and related kits. The present invention relates to a solid anhydrous cosmetic composition in particulate form, comprising at least 30% by weight of an anionic surfactant, at least 5% by weight of an amphoteric surfactant, and at least 10% by weight of filler. The present invention also provides a method for preparing this composition by granulation on a fluidized air bed, as well as a method for cosmetic treatment of keratin materials, in particular hair, in particular care and / or cleaning, wherein said solid anhydrous makeup It relates to a method comprising the step of applying a cosmetic composition alone or in combination with a hair conditioning composition. The present invention also relates to a kit comprising the solid anhydrous cosmetic composition and the conditioning composition.固体無水化粧用組成物、調製方法、美容処置方法及び関連キット。本発明は、粒子形態であって、少なくとも30質量%のアニオン性界面活性剤、少なくとも5質量%の両性界面活性剤、及び少なくとも10質量%のフィラーを含む、固体無水化粧用組成物に関する。本発明はまた、この組成物を流動化空気床上での造粒によって調製する方法、更には、ケラチン物質、特に毛髪の美容処置、特にケア及び/又は清浄の方法であって、前記固体無水化粧用組成物を、単独で又は毛髪コンディショニング組成物と組み合わせて適用する工程を含む、方法に関する。本発明はまた、前記固体無水化粧用組成物と前記コンディショニング組成物とを含むキットに関する。
