申请人:Australian Importers, Ltd.
公开号:EP1688130A1
公开(公告)日:2006-08-09
Stable vitamin C (L-ascorbic acid) compositions for topical application, comprising micronized L-ascorbic acid in a substantially non-aqueous carrier having a pH greater than that of skin, and preferably not lower than approximately 5.5 and not greater than approximately 7.5, are described. The composition may consist essentially of L-ascorbic acid and capric/caprylic triglycerides or may further comprise papain as an enzymatic exfoliant in addition to humectants, emollients, viscosity-increasing agents, surfactants, and preservatives. Methods of preparing the micronized L-ascorbic acid for use in the described formulations, by a "wet" micronization process, are also described. The compositions are useful as UV protectants, promoters of collagen synthesis and in the removal and/or treatment of wrinkles.
本发明描述了用于局部应用的稳定维生素 C(左旋抗坏血酸)组合物,该组合物包含在基本非水载体中的微粉化左旋抗坏血酸,其 pH 值高于皮肤 pH 值,最好不低于约 5.5,不高于约 7.5。除了保湿剂、润肤剂、增粘剂、表面活性剂和防腐剂之外,该组合物还可主要由 L-抗坏血酸和癸/癸酸甘油三酯组成,或进一步包含木瓜蛋白酶作为酶去角质剂。此外,还介绍了通过 "湿法 "微粉化工艺制备用于所述配方的微粉化 L-抗坏血酸的方法。这些组合物可用作紫外线防护剂、胶原蛋白合成促进剂以及去除和/或治疗皱纹。