murphyAscophyllum nodosum extract
AKA: Knotted Wrack, Alga
Plant-Derived
Skin Conditioner
Extract
Not Clean
OriginNative 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.
Ascophyllum Nodosum Extract is an extract of the Alga, Ascophyllum nodosum (L.), Fucaceae
Family
Phaeophyceae (Brown Algae)
Plant Part
Thallus
CAS #
84775-78-0
Form
Liquid
Skin Types
●all-skin-types
Best For
Dullness
Pregnancy & Breastfeeding Safe
Yes
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.
Locks in moisture
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory2 listings →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not Phototoxic
Lab (in vitro) test found no phototoxicity in the CIR safety assessment (CIR 771)
Not a Skin Irritant
1 study / 1 not irritating (CIR 771)
Not a Sensitizer
2 studies / 2 not sensitizing (CIR 771)
Eye Irritant in Testing
2 studies / 2 irritating / reactions slight to mild (CIR 771)
Concentration Guide
Leave-on0.0000004–0.2%
Rinse-off0.00004–0.0032%
0%50%100%
CIR reported use · report published 2026
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR