Problem to be solved: to provide a keratin substance, a method of making a composition for makeup treatment of a human keratin fiber such as skin or hair, and a cosmetic method for treating the keratin substance using this composition. Solution: at least about 0.3 MPa (3 bar) under pressure, at least a vapor containing fluid is permeated into a cosmetic active drug sensitive to at least one non color, external stimulus, in a solid state or paste state In accordance with the manufacturing method of the cosmetic composition for treating the keratinous material and the method according to this method, the makeup treatment composition is prepared and the resulting composition is applied to the keratin substance, and the keratin substance is treated Cosmetic method.
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