Disclosed herein are oil-in-water dispersions and sunscreen compositions that contain them, which exhibit high in vivo sun protection factor (SPF) efficiency due to the ability of the dispersions to both absorb and scatter ultraviolet (UV) light. These high efficiency sunscreen compositions include discrete oil particles that are enclosed within a solid coating and dispersed in an aqueous phase, wherein each oil particle contains an organic ultraviolet A (UVA) and/or an organic ultraviolet B (UVB) absorbing compound, and optionally a photo stabilizer.
本文公开了
水包油分散体和含有它们的防晒组合物,由于分散体具有吸收和散射紫外线(UV)的能力,因此在体内表现出很高的防晒系数(
SPF)效率。这些高效防晒组合物包括封闭在固体涂层中并分散在
水相中的离散油粒子,其中每个油粒子都含有一种有机紫外线 A(UVA)和/或有机紫外线 B(UVB)吸收化合物,以及可选的
光稳定剂。