Typical Inorganic Nanoparticles Used in Cosmetics

Abstract

With the development of nanotechnology, there are more and more nanoparticles (NPs) of various kinds. Due to the new physical and chemical properties of nanoparticles, they are used in various industries, among which the cosmetics industry benefits a lot from NPs. Cosmetics mainly act on the skin, such as lotions, sunscreens, hydrating cosmetics, etc. Inorganic nanomaterials are used in a variety of cosmetics to improve the efficacy of cosmetics due to their unique physical and chemical properties. Most nanoparticles exhibit superior physical reflection or scattering effects, which can help enhance sunscreens while still stabilizing efficacy. There are pros and cons to enhancing the absorption capacity of nanoparticles, and it is necessary to control them within a safe and appropriate application range. This article mainly introduces inorganic nanoparticles such as titanium dioxide, zinc oxide, silicon dioxide, alumina, gold, silver, copper, hydroxyapatite, etc. Specifically, this article analyzes their basic information, their special effects and enhancing effects in related cosmetics, as well as the pros and cons of their absorption capacity and safety issues.