| abstract |
(57) [Summary] [PROBLEMS] By activating metabolic activity of dermal fibroblasts and preventing damage to fibroblasts by ultraviolet rays, generation of wrinkles and spots due to various stresses such as aging and ultraviolet rays, Provided is a skin external preparation which is effective for preventing or improving skin aging symptoms such as a decrease in skin elasticity, and has an anti-inflammatory action, a wound healing promoting action, and a moisturizing action. SOLUTION: Keetoceros Gracilis ( Chaetoceros) Gracilis ) or a polysaccharide contained in the culture supernatant is blended as an active ingredient in an external preparation for skin. |