Representative Inorganic Nanomaterials and Liposomes in Cosmetics

Abstract

Nanomaterials are defined as materials ranging from 1nm to 100nm in at least one dimension or with internal nanostructures in bulk materials but showing distinct properties. Since the 20th century, when the feasibility of nanotechnology had been attested, nanomaterials’ applications have radiated to various fields involving electronics, physics, chemistry, processing, biology, and measurement. Moreover, inspired by the physicochemical properties and targeted effects of nanomaterials in therapy and medicine, the anticipated applications in cosmetics are well-developed. Herein, the transparency and enhanced absorption of nano titanium dioxide/zinc oxide, the antibacterial property of nanosilver/nanogold, and the stability, increased penetration, and biocompatibility of liposomes in cosmetics are summarized. Besides, the existing problems such as security assessment, elevatable loading efficiency, and usage are classified. Particularly, the focus is on the mechanism of liposomes, preparation, routes of penetration, and liposome-cell interactions. This article intended better to understand the principles of nanomaterials behind cosmetic applications and get alerted to the inconclusive security.