| abstract |
(57) [Summary] [PROBLEMS] To provide good stability, low irritation to the skin, and to suppress complex skin inflammatory reactions, etc., and to prevent and improve rough skin and aging of the skin. Obtain a skin external preparation. SOLUTION: One or more kinds of extract and extract fraction of cuckoo ( Puerariae Radix ), or 4 ', 7-Dihydroxyisoflavone and one or more selected from N-acylamino acids and salts thereof are used in combination in an external preparation for skin. Furthermore, by containing one or more selected from phospholipids, the stability of the preparation, the effect of preventing and improving skin roughness and skin aging can be further improved. |