Squalane
What it is
Squalane is the fully hydrogenated, stable form of squalene — a polyunsaturated hydrocarbon constituting approximately 10-12% of human sebum. Endogenous squalene production peaks in adolescence and declines progressively with age. Modern cosmetic squalane is predominantly derived from sustainable plant sources (olives, sugarcane, rice bran) through hydrogenation, which eliminates squalene's oxidative instability. Its molecular structure mirrors that of sebum lipids, ensuring exceptional biocompatibility, rapid absorption, and non-comedogenic properties despite being an oil.
What it helps with
- Providing lightweight emollience without occlusive heaviness
- Replenishing lipids depleted by age, environmental factors, or cleansing
- Preventing transepidermal water loss through barrier reinforcement
- Improving skin softness and suppleness
- Enhancing the penetration and tolerability of other actives
- Balancing sebum production in oily skin types
Common concerns it addresses
Best for
Clinical suitability
- Appropriate for acne-prone patients seeking non-comedogenic moisture
- Indicated during retinoid therapy to mitigate dryness
- Suitable for patients with rosacea or sensitive skin
- Beneficial for mature skin with decreased sebum production
- Safe during pregnancy and lactation
Use with caution
- Ensure product is squalane (hydrogenated) not squalene (unstable, prone to oxidation)
- Very oily skin may prefer lighter application — adjust quantity as needed
Not ideal for
- Those who prefer water-based only routines
- Patients with active fungal acne (malassezia folliculitis) — while generally tolerated, monitor response
How it's commonly used
Squalane is available as a pure oil or incorporated into moisturisers and serums. Apply 2-4 drops after water-based serums to seal in hydration, or mix with moisturiser for enhanced emollience. Suitable for morning and evening use. Its rapid absorption and non-greasy finish make it appropriate even for daytime use under makeup. Can be applied to damp skin for enhanced penetration or used as a final occlusive step.
Pairs well with
Clinic note
Squalane challenges the widespread misconception that oily skin should avoid oils. We consistently find that patients with seborrhoea who incorporate squalane actually experience improved oil balance — likely because supplementing with a sebum-mimetic oil reduces the skin's compensatory overproduction. Its versatility as a carrier for other actives makes it invaluable; we recommend adding squalane to retinoid products for patients experiencing excessive dryness.
Ingredient-focused product examples
Clinically curated examples featuring this ingredient. These are optional references to help guide your product research.
Pure Squalane Oil
Lightweight, fast-absorbing oil that locks in moisture and leaves skin soft without greasiness.
View productHydra-Lock Moisturiser
Balancing moisturiser that provides lasting hydration while helping regulate natural oil production.
View productThis content is provided for educational purposes and does not replace personalised medical advice. Individuals with skin conditions, those who are pregnant, or those undergoing dermatological treatments should seek professional guidance before introducing new active ingredients.
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