Squalane is an emollient used as cosmetic ingredient. It naturally occurs in small amounts in the lipid layers of skin, and along with its precursor squalene, prevents moisture loss while restoring skin’s suppleness and flexibility. It is soluble in all common cosmetic media, and can be used without limits in all types of formulations being non-toxic and a non-irritant. It is used in skin care products as an active or inactive ingredient and can be used in emulsion composition in vaccines and some drug compositions. Squalane is a hydrogenated squalene - a natural product first extracted from shark liver oil, and later isolated from olive and palm oils. In a pure state, it is a mobile, colorless, odorless and tasteless hydrocarbon oil with good physical and chemical stability. Up to date, anticancer, antioxidant, drug carrier, detoxifier, skin hydrating, and emollient activities of squalane have been reported both in animal models and in vitro environments.