Disclosed is a chemical composition for external application, which comprises a kojic acid or kojic acid derivative and an unsaturated linear fatty acid having from 4 to 26 carbon atoms and having from 1 to 6 unsaturated bonds where the position(s) of the unsaturated bond(s) is (are) any desired position(s) in the alkyl chain of the acid except the terminal opposite to the carboxyl group thereof or a derivative thereof as active ingredients. By the synergistic effect of the two active ingredients, the composition is effective for noticeably preventing formation of melanin to cause freckles and spots in the skin and for noticeably whitening the skin.
本发明公开了一种外用
化学组合物,该组合物由
曲酸或
曲酸衍
生物和具有 4 至 26 个碳原子且具有 1 至 6 个不饱和键的不饱和线性
脂肪酸作为活性成分,其中不饱和键的位置在酸的烷基链上的任意位置,但与羧基相对的末端除外。通过这两种活性成分的协同作用,该组合物能有效防止
黑色素的形成,防止皮肤出现雀斑和斑点,并能明显美白皮肤。