Algin
Reviewed by Kate · Last updated 18 Aug 2026
Algin is a polysaccharide derived from brown algae that’s used
At a glance
Things to be aware of
EWG Safety Score
What Is Algin?
Algin is a polysaccharide derived from brown algae that’s used as a gelling and thickening agent in skin care.
Regulatory information
Standardised cosmetic-ingredient identifiers used by regulators.
Show identifiers
- INCI Name
- ALGIN
- INN Name
- sodium alginate
- Pharmacopoeia Name
- natrii alginas
- Function
- Binding, Masking, Viscosity Controlling
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