Ascophyllum nodosum (Kelp) extract
AKA “Kelp Extract”
Extract
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Ingredient Facts
Ascophyllum nodosum (Kelp) extract
AKA: Kelp Extract
Extract · Skin Conditioning · EWG: 4
Plant-Derived
Skin Conditioner
Marine
Extract
Not Clean
Ascophyllum nodosum [Kelp] Extract is a cosmetic ingredient used as skin conditioning.
Family
Phaeophyceae (Brown Algae)
Plant Part
Thallus
CAS #
84775-78-0
Form
Liquid
See origin →
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Conditions Skin
Anti-Aging Benefits
Antioxidant Protection
Brightens Skin
Softens & Smooths
Traditional Use
Seaweed has been used in traditional Asian skincare and medicine for centuries. Kelp extracts were adopted by modern cosmetics in the 20th century for their mineral content and hydrating properties.
Skin Types
●all-skin-types
Best For
Hydration
Pregnancy & Breastfeeding Safe
Caution
Alaria esculenta (sea kelp) extract
European Commission
EU Cosmetic Ingredient Database (CosIng)
Ascophyllum nodosum (kelp) powder
European Commission
EU Cosmetic Ingredient Database (CosIng)
Ascophyllum nodosum [Kelp] Extract
European Commission
EU Cosmetic Ingredient Database (CosIng)
Macrocystis Pyrifera (Kelp)
European Commission
EU Cosmetic Ingredient Database (CosIng)
Macrocystis Pyrifera (Kelp) Blade/Pneumatocyst/Stipe Juice Extract
European Commission
EU Cosmetic Ingredient Database (CosIng)
Macrocystis Pyrifera (Kelp) Extract
European Commission
EU Cosmetic Ingredient Database (CosIng)
Macrocystis Pyrifera (Kelp) Juice
European Commission
EU Cosmetic Ingredient Database (CosIng)
Macrocystis Pyrifera (Kelp) Protein
European Commission
EU Cosmetic Ingredient Database (CosIng)
Macrocystis Pyrifera (Kelp)
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Macrocystis Pyrifera (Kelp) Protein
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Physicochemical characterization and cosmetic application of kelp blanching water polysaccharides.
Liu P, Hu J, Wang Q, Tan J, Wei J et al.
International journal of biological macromolecules, 2023
Verified Jun 2026
Data: CosIng · EWG · CIR