squalenea

Squalene is a natural organic compound that belongs to the triterpene class. It is a transparent, viscous liquid that is colorless and odorless. Squalene is a precursor in the biosynthesis of all animal sterols, including cholesterol. It is also found in significant quantities in the liver of sharks, from which its name is derived (from the Latin word *squalus*, meaning shark).

In addition to shark liver oil, squalene is also present in other natural sources such as olives, amaranth seeds, and sugarcane. It is produced by the human body as well, with the sebaceous glands being a primary site of production. Squalene is a component of human sebum and plays a role in skin lubrication and protection.

Due to its emollient properties, squalene has found applications in the cosmetics and personal care industry. It is used in moisturizers, creams, and lotions to hydrate and soften the skin. Its antioxidant properties are also cited as beneficial for skincare. Beyond cosmetics, squalene has been investigated for its potential health benefits, including its role in cholesterol metabolism and its use as a vaccine adjuvant. Research continues to explore its various biological activities and potential therapeutic uses.