Emollient ingredient
Squalene
The unsaturated C30 triterpene precursor to squalane, present in human sebum and plant oils such as olive oil; highly susceptible to peroxidation, which distinguishes it from its stable, fully saturated counterpart squalane.
Also known as: spinacene, supraene
emollientskin conditioningskin replenishing
Benefits
- ✓Natural component of human sebum (~10–15%) — highly skin-compatible
- ✓Emollient that softens and smooths skin
- ✓Supports the skin's surface lipid film
- ✓Found naturally in olive oil and amaranth seed oil
Watch for
- ⚠Prone to oxidation on exposure to air and UV, forming squalene peroxides — comedogenic and pro-inflammatory byproducts
- ⚠Oxidised form (squalene monohydroperoxide) is more comedogenic than established comedogenic cosmetic ingredients in controlled studies
- ⚠May contribute to acne vulgaris when oxidised on skin surface
- ⚠Not recommended for acne-prone skin unless formulated with antioxidants; squalane (saturated) is preferred for stability
Compatibility
✓ Works well with
+ Tocopherol
