Ascophyllum nodosum extract
AKA “Alga
Synthetic
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Ingredient Facts
Ascophyllum nodosum extract
AKA: Alga
Synthetic · Skin Conditioning | Humectant | Antioxidant · EWG: 4
Plant-Derived
Antioxidant
Humectant
Skin Conditioner
Marine
Synthetic
Clean
Brown seaweed from the Irish coast that nourishes and conditions skin, helping it feel soft and hydrated.
Family
Phaeophyceae (Brown Algae)
Plant Part
Thallus
CAS #
84775-78-0
Form
Liquid
Plant-Derived
Botanical. Native to North Atlantic, Ireland. Derived from Ascophyllum nodosum, a brown seaweed harvested from the North Atlantic coast near Ireland. Extracted from the thallus through water or solvent extraction methods to concentrate bioactive compounds.
Plant Source
Phaeophyceae (Brown Algae)
Plant Part
Thallus
Function
Skin Conditioning | Humectant | Antioxidant
Benefits
Locks in moisture
Traditional Use
Modern extraction of the seaweed Ascophyllum nodosum developed in the 20th century to concentrate its bioactive compounds (polysaccharides, minerals) for use in contemporary skincare formulations.
Skin Types
all-skin-types
Best For
Target
Dullness
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score4
CIR Safety Findings
medical-approval, all-shades-safe, Moderate Irritant
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR