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Humectant

Hyaluronic Acid

INCI: Sodium Hyaluronate·Studied at 0.1–2%·Moderate evidence

A humectant that holds many times its weight in water, used at a range of molecular sizes for the appearance of plumper, more hydrated-looking skin. It is a comfort and finish ingredient, not an anti-aging active.

Studied for

  • ·The appearance of hydrated, plumper-looking skin

How it’s thought to work

Studied for association with drawing and holding water at the surface for the look of smoother, dewier skin; the effect is hydration-driven and largely lasts while it is being used.

Questions

Can hyaluronic acid dry my skin out?
In very dry air it can pull moisture from deeper skin if there is nothing to draw from and nothing sealing it in. Applying it to damp skin and following with a moisturiser keeps it working the right direction.

Serums we’ve scored with Hyaluronic Acid

References