Irish Moss Extract
INCI: Algae
Reviewed by Rosie · Last updated 10 Sep 2026
Also known as: Algae, Chondrus Crispus, Carrageenan
Is a type of seaweed that's also known as red algae Contains skin-beneficial compounds like beta-carotene and potent antioxidants
EWG Safety Score
What Is Irish Moss Extract?
Chondrus crispus, also known as red algae, is a type of seaweed that’s a rich source of many nutrients for skin, including the pigment beta-carotene and potent antioxidants zeaxanthin, lutein, which help protect skin from the visible effects of blue light exposure. Of course, the antioxidants in red algae have wider-reaching benefits, too.
The natural polysaccharides, peptides, and amino acids in red algae also help skin to stay hydrated; meanwhile, the numerous antioxidants in this and other types of algae can help shield skin from damaging airborne pollutants.
Chondrus crispus contains a compound known as carrageenan, which forms a flexible film on skin that offers further defense against environmental stressors.
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