Squalane

Lightweight plant-derived oil that mimics skin's natural moisture barrier.

Also known as: Squalane (INCI), derived from sugarcane or olives; also called norisoprenoid.

What it is

Squalane is a saturated hydrocarbon derived from plant sources (typically sugarcane or olives) that closely mimics squalene, a natural lipid already present in human skin sebum. It's odorless, colorless, and highly stable.

What it does

Squalane penetrates the skin quickly to reinforce the lipid barrier, reducing transepidermal water loss (TEWL) and improving hydration without a greasy feel. It also has mild antioxidant and anti-inflammatory properties that support skin barrier integrity and may reduce irritation from other actives.

The evidence

Strong clinical evidence supports its efficacy for barrier repair and hydration; multiple studies confirm it reduces TEWL and improves skin moisture retention. Moderate evidence for anti-inflammatory benefits in sensitive or compromised skin.

Best for

All skin types, especially dry, sensitive, compromised, or barrier-damaged skin; ideal for post-procedure care and as a base for active ingredients.

Pairs well with

Hyaluronic acid, ceramides, niacinamide, peptides, retinol, vitamin C, and other actives—it stabilizes and enhances their delivery without interference.

Use cautiously with

No major conflicts. Safe to layer with most ingredients; may slightly reduce efficacy of water-based humectants if applied before them, so apply humectants first.

Cautions

Generally well-tolerated; rare allergic reactions possible in those sensitive to plant oils. Non-comedogenic at typical use levels, but very high concentrations may occlude pores in acne-prone skin.