Review of Cosmetic Effects of Natural Bio Functional Ingredient Against Skin Aging

Abstract

The review study sheds some light on how natural bio-functional substances affect skin aging from a cosmetic standpoint. The skin comprises three layers that act as a barrier to help protect against pathogens, playing a vital function in the immune system as a result. It also helps in thermoregulation, excretion, and absorption. The primary mechanism which contributes to skin aging is oxidative stress which is because of the generation of reactive free radical species. Another mechanism is inflammation which can be due to various pollutants, UV radiation, and other factors. Skin aging is of two types, intrinsic and extrinsic aging. The bioactive ingredients in this article are aloe vera, avocado, cucumber, green tea, walnut, and amla. Each of these acts according to different mechanisms due to the various specific constituents present in them. The review also contains information about the biological source, family, chemical constituents, chemical structure along with the marketed products available for these biofunctional ingredients.