Laminaria Digitata Extract
INCI: Laminaria digitata
Reviewed by Daisy · Last updated 10 Sep 2026
Also known as: Laminaria digitata, sea kelp, brown seaweed
Marine plant extract that can soothe distressed skin Visibly eases signs of ageing due to sun damage
EWG Safety Score
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What Is Laminaria Digitata Extract?
Laminaria digitata is a marine plant extract rich in nutrients and compounds that help to soothe signs of reddened, irritated skin and mitigate signs of sun damage.
Also known as sea kelp and brown seaweed, Laminaria digitata contains skin-soothing beta-glucan, polyphenolic antioxidants known as phlorotannins (these help brown seaweed withstand UV exposure) and phloroglucinol, which are responsible for this extract’s skin-calming benefit. These and other antioxidants help support skin’s firm look and feel, making Laminaria digitata a great option to see in anti-ageing products.
Usage levels of Laminaria digitata extract range from 0.0001%–5%, depending on formulary needs and desired claims. It is among the edible types of seaweed and several toxicology tests have consistently shown this extract is non-irritating when applied to skin.
Benefits for Your Skin
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Take the skin quizOther forms of Laminaria Digitata Extract
These appear on ingredients lists under different names but are the same substance. Laminaria Digitata Extract is the common form.
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