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Ingredient guide
alguronic acid
In short
Alguronic acid is a microalgae-derived polysaccharide that forms a hydrating, protective film on skin. It’s often used in premium formulas to support smoothness and barrier comfort.
Reviewed against published evidence · editorially independent · no brand pays for placement
Works for
Hydration · Barrier
Best used
Anytime
What it is
Proprietary polysaccharide from rapidly-dividing microalgae (Solazyme); contains unique polyols and glucuronides; acts as a biosurfactant and film-forming humectant; in-vitro studies show activation of cell renewal pathways; primarily used in premium anti-aging hydration serums.
Also found as
Related
Where to find it
Algenist Genius Liquid Collagen
Algenist GENIUS Ultimate Anti‑Aging Cream
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Common questions
It helps increase hydration, supports the barrier, and can give skin a softer, more cushioned feel.
Most skin types tolerate it well, especially those looking for gentle hydration without heaviness.
It’s commonly found in high‑end serums and creams focused on hydration and visible skin smoothness.
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Personal guidance only · For clinical concerns, see a dermatologist.