Squalene (CAS 7683-64-9), chemically named 2,6,10,15,19,23-hexamethyltetracosa-2,6,10,14,18,22-hexaene with the formula C₃₀H₅₀ and a molecular weight of 410.72, is a key multi-unsaturated terpene hydrocarbon widely used in cosmetics. It naturally exists in human sebum, shark liver oil, and plant oils (olive, wheat germ), and is prized for its excellent skin compatibility and biological activity.
- Skin Compatibility: Mimics human sebum to deliver fast penetration without greasiness; ideal for all skin types, including sensitive skin.
- Moisturizing & Barrier Repair: Boosts hydration retention and accelerates barrier recovery; often paired with hyaluronic acid or ceramides in serums and creams.
- Antioxidant & Anti-Aging: Neutralizes free radicals, reduces oxidative stress, and helps diminish fine lines and dullness.
- Enhanced Formulation Stability: Acts as a natural solubilizer for fat-soluble actives (e.g., vitamins A/E) and improves formula texture.
Data compiled from industry standards and lab tests.
Commonly added at 1–5% in facial oils, moisturizers, sunscreens, and anti-aging serums. Store away from light and oxidizing agents; mix well with other oils or emulsifiers during production. For best stability, blend with 0.05–0.1% vitamin E to prevent oxidation.
