squalene
/ˈskweɪlin/
noun
- A natural oily substance found in plants and animals, including humans, often used in cosmetics and vaccines.
- Shark liver is a rich source of squalene, but plant-based versions are also available.
- Some vaccines contain squalene to help boost the immune response.
- Squalene is a common ingredient in moisturizers because it helps hydrate the skin.