Abstract: There are provided an anti-aging composition, a collagen production promoting composition, a collagen gel contraction promoting composition, and an integrin production promoting composition for promoting integrin production in fibroblasts/epidermal cell, which have improved collagen production promotion effect and are effective for preventing or reducing wrinkle and/or sagging caused by aging. These anti-aging composition and promoting composition comprise, as an active ingredient, a hydrogen peroxide-treated yeast hydrolysate.

Abstract: A hair cosmetic comprises one or more amino-modified or ammonium-modified silicones of wherein each R1 is independently a methyl group, a phenyl group or a hydroxyl group, each R2 is independently R4Z, a is an integer of 0 to 3, each of m and n is a positive integer, a mean value of m+n is a range of from 4000 to 6000, and a mean value of n/m is a range of from 0.002 to 0.03, wherein R4 is C3-C6 alkylene group, and Z is represented by any of the following formulas: wherein each R5 is independently a hydrogen atom or a C1-C30 alkyl group, R6 is a C1-C30 alkyl group, A is a chlorine atom, a bromine atom or an iodine atom, and b is an integer of 2 to 6.

Abstract: There are provided an anti-aging composition, a collagen production promoting composition, a collagen gel contraction promoting composition, and an integrin production promoting composition for promoting integrin production in fibroblasts/epidermal cell, which have improved collagen production promotion effect and are effective for preventing or reducing wrinkle and/or sagging caused by aging. These anti-aging composition and promoting composition comprise, as an active ingredient, a hydrogen peroxide-treated yeast hydrolysate.