Cosmetics containing polyorganosiloxanes with block structures

Abstract

The objective of this invention is to provide a cosmetic material with high coating uniformity and no secondary adhesion, as well as excellent makeup longevity. The cosmetic material of this invention, which solves the objective of this invention, contains a polyorganosiloxane with a block structure, represented by the following general formula (1), having a weight average molecular weight of 500,000 or more, and being a solid with a softening point of 50°C or more at room temperature in a solvent-free state. (In the formula, R1, R2, R3, R4, and R5 are hydrogen atoms or saturated or unsaturated hydrocarbon groups with 1 to 20 carbon atoms that may have substituents; m represents the repetition number of the two organosilicon units, 50 ≧ m ≧ 0; a, b, c, d, and e represent the molar ratio of each siloxane unit, 0.3 ≧ a ≧ 0, 0.3 ≧ b > 0, 0.5 ≧ c ≧ 0, 0.95 ≧ d > 0.5, 0.3 ≧ e ≧ 0, a + b × (2 + m) + c + d + e = 1; x and y are the number of hydroxyl or alkoxy groups bonded to 1 molar of Si atoms relative to the aforementioned siloxane units a to e, and represent 0.1 ≧ x > 0 and 0.1 ≧ y > 0.)

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