What is squalane in skincare?
Squalane is the stable, hydrogenated version of squalene – a lipid your own sebaceous glands produce, and one of the components that keeps skin soft and water-resistant. Squalene itself oxidises quickly; squalane does not, which is why formulations use it.
It was historically harvested from shark liver, but cosmetic-grade squalane today is almost always derived from olives or sugarcane fermentation. Squalene levels in skin decline with age, which is part of why mature skin feels drier.
What skin concerns does squalane treat?
It relieves dryness, tightness and rough texture, and supports barrier repair without the heaviness of a butter or the shine of a traditional oil. It is lightweight, absorbs fast and is non-comedogenic, so oily and acne-prone skin can use it comfortably.
Research also points to antioxidant activity and a protective effect on collagen synthesis after UV exposure, giving it a mild role in ageing prevention as well as comfort.
What ingredients are best paired with squalane?
Use it as the sealing step over humectants – hyaluronic acid, glycerin, sodium hyaluronate – and alongside ceramides for full barrier repair.
It is an ideal buffer for strong actives: applied before or after a retinoid or acid, it noticeably reduces stinging and flaking without blocking the active. It suits every skin type and has almost no interaction risk. Take our Skin Quiz.
What is dullness?
Healthy skin reflects light evenly, which is what reads as bright and glowing. Dull skin does the opposite – it looks flat, ashy, grey or sallow, and makeup tends to sit on top of it rather than blend in.
Dullness is not a condition in itself but a visible symptom: a build-up of dead cells, dehydration and reduced microcirculation that together stop light bouncing cleanly off the skin’s surface.
What causes dull skin?
Dead skin cells that do not shed naturally accumulate on the surface and scatter light unevenly. Dehydration flattens those cells so they no longer sit plump against one another, and overly dry skin can damage the follicles and slow the production of collagen and sebum – all of which make the complexion look duller or ashier.
Lifestyle and environment do the rest. Sun exposure, pollution, smoking, alcohol, broken sleep and stress all accelerate free-radical damage, while cell turnover naturally slows with age, so skin loses the reflectivity it had in your twenties.
What ingredients are best for dullness?
Brightening dull skin comes down to three things: gentle exfoliation, consistent hydration and antioxidant protection. Vitamin C, alpha-hydroxy acids such as glycolic and lactic acid, salicylic acid, retinol and vitamin A, niacinamide, green tea extract, coenzyme Q10 and rosehip oil all help resurface, even out tone and defend against free radicals.
Hyaluronic acid and hydrolysed collagen plump the skin so it reflects more light, and daily broad-spectrum sunscreen prevents the UV damage that dulls the complexion in the first place. Take our Skin Quiz to find the exact combination your skin needs.
