This story is part of the September 21 edition of Sunday Life. See all 13 stories .

Every so often an ingredient captures the beauty industry and seems to become inescapable. We saw it with hyaluronic acid and retinol, which have become skincare staples. Now squalene and squalane are enjoying their moment in the sun.

Squalene occurs naturally in the body and is found in skin sebum. It has antioxidant and emollient properties that work to keep skin hydrated. Sadly, as we age, our body’s squalene production slows.

Squalane is a refined, more stable version, derived through hydrogenating squalene, and is used in skincare products to boost moisture, improve elasticity and offer antioxidant protection. It’s also great for barrier protection and retaining moisture without clogging pores.

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