Squalane: The Plant-Based Alternative to Squalene – What's Really Behind It?

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The short answer

Squalane is the stable, saturated form of squalene, a lipid that the skin also produces itself. Today, around 99% of it is obtained from plants such as olive oil or sugar cane; it absorbs quickly, is non-comedogenic and can support the skin barrier. However, only the structure is ‘skin-identical’, not the molecule itself – squalane and squalene are not chemically the same.

Squalane and squalene: two names, one important difference

Squalene is a lipid that the skin produces itself via the sebaceous glands – in young people it makes up a considerable share of sebum, and the body's own production decreases noticeably with age. Chemically, squalene has six double bonds, which make it very reactive: it oxidises quickly in air, goes rancid and can even form comedogenic breakdown products in cosmetic formulations.

Squalane is made from squalene by hydrogenation: the double bonds are fully saturated, creating a chemically stable, practically inert molecule. This is the key point – squalane is not simply ‘purified’ squalene, but a structurally altered, saturated variant. It is precisely this saturation that makes it shelf-stable, odourless and practical for cosmetic formulations.

Where plant-based squalane comes from today

In the past, squalane came mainly from shark liver oil – ecologically and ethically problematic. Today, the vast majority of commercially used squalane is obtained from plants, usually from olive oil distillation residues (a by-product of olive oil refining) or through fermentation of sugar cane. Squalane produced by fermentation is molecularly indistinguishable from animal or plant-based squalane, but is considered particularly resource-efficient as no olive cultivation is required.

For certified natural cosmetics, plant origin is a requirement: only squalane obtained from plants or by fermentation is compatible with standards such as COSMOS or ECOCERT; animal squalane is excluded.

What the research shows – and where to ask critical questions

The effect of squalane on the skin barrier is comparatively well researched: studies show a reduction in transepidermal water loss (TEWL) and measurably improved moisture retention with regular use. As a lipid, squalane fits well into the lipid matrix of the stratum corneum without burdening the skin barrier or disturbing the microbiome – its low molecular polarity also gives it a light, non-greasy feel as it absorbs.

Newer research from 2025 also documents a protective effect against UV-induced oxidative stress and a certain antioxidant activity that counteracts free radicals. A 2022 study also showed that a squalane emulsion can prolong the time polyphenols remain in the skin – an indication that squalane could also be interesting as a carrier lipid for other active ingredients.

What remains critical is above all the marketing language: the term ‘skin-identical’ is often used as if squalane were exactly the molecule the skin produces itself. Structurally, this is only partly true, as it is the saturated, chemically modified variant. The basic lipid similarity explains its good tolerability, but does not justify equating it with the body's own squalene. If you have particularly sensitive or blemish-prone skin, you should introduce squalane slowly despite its reputation as non-comedogenic and observe how your skin reacts.

How to add squalane to your skincare routine

As a complement to hydration

Squalane is rarely used pure, but usually as part of a formulation. In The Day Cream with plant lipids and sea buckthorn, lipid-like ingredients complement barrier care without weighing the skin down – a good principle that can be applied to squalane-containing formulations.

For dry and more mature skin

Since the body's own squalene production decreases with age, more mature or very dry skin types benefit particularly from lipid-rich formulations. The Beauty Sleep Cream & Mask with shea butter provides an intensive extra portion of lipids for the barrier overnight.

For combination or oily skin

If you prefer a lighter, oil-free texture, The Glowy Gel with aloe vera and zinc is an alternative that focuses on moisture rather than adding lipids – a good point of comparison to better assess your own skin before using lipid-richer products.

Frequently asked questions about squalane

Is squalane comedogenic?

Squalane is considered non-comedogenic and is usually well tolerated, even by blemish-prone skin. Individual intolerance can never be completely ruled out, though, so a patch test makes sense.

Is plant-based squalane as effective as squalane from shark liver?

Yes, plant-based or fermented squalane does not differ molecularly from animal squalane – the effect on the skin is identical, but production is much more resource-efficient and free of the ecological problems of shark liver extraction.

Can squalane replace retinol or vitamin C?

No. Squalane is a lipid for barrier care and moisture retention, not an active ingredient with the specific effects of retinol or vitamin C. However, it combines well with both, as it additionally soothes the skin while using active ingredients.

Conclusion

Squalane is a well-researched, well-tolerated lipid with proven benefits for moisture retention and the skin barrier – but the label ‘skin-identical’ is more of a simplified marketing formula than an exact chemical description. If you're looking for plant-based squalane, look for plant or fermented origin and see it as a useful addition to a barrier routine, not as a miracle cure. The Hydra Barrier Repair Set is a good start for lipid-conscious skincare.