A composition suitable for topical application to human skin for reducing the damaging effects of ultra-violet light on skin comprises:
(a) an effective amount of a triester of citric acid having the structure (1):
where
R¹, R² and R³ each independently represent a branched or unbranched alkyl,alkenyl, aryl, alkylaryl or arylakyl group, each said group being optionally substituted and having from 1 to 18 carbon atoms,
R⁴ represents -H, or a branched or unbranched saturated or unsaturated acyl, alkyl, aryl, alkylaryl or arylalkyl group, each said group being optionally substituted and having from 1 to 18 carbon atoms; and
(b) a cosmetically acceptable vehicle for the citric acid ester; and
(c) an effective amount of a sunscreen agent, with the proviso that in the case where the sunscreen agent is an inorganic sunscreen, it has an average particle size of less than 100µm.
一种适用于人体皮肤局部使用的组合物,可减少紫外线对皮肤的破坏作用,该组合物包括
(a) 有效量的
柠檬酸三酯,其结构为 (1):
其中
R¹、R² 和 R³ 各自独立地代表支链或未支链的烷基、烯基、芳基、烷芳基或芳烷基,每个所述基团被任选取代且具有 1 至 18 个碳原子、
R⁴代表-H,或支化或不支化的饱和或不饱和酰基、烷基、芳基、烷芳基或芳基烷基,每个所述基团被任选取代且具有 1 至 18 个碳原子;和
(b)
柠檬酸酯的化妆品可接受载体;以及
(c) 有效量的防晒剂,但在防晒剂为无机防晒剂的情况下,其平均粒径小于 100µm。