murphyCystoseira amentacea/caespitosa/branchycarpa extract
molecular structure · PubChem
AKA: Brown seaweed extract, Cystoseira extract
Plant-Derived
Skin Conditioner
Extract
Not Clean
OriginNative to Mediterranean, Atlantic. Derived from brown algae species (Cystoseira amentacea, caespitosa, and branchycarpa) native to Mediterranean and Atlantic waters. Obtained through solvent extraction of the whole plant material to isolate bioactive compounds.
Cystoseira Amentacea Extract
Family
Fucaceae
Plant Part
Whole Plant
Form
Liquid
Skin Types
●all-skin-types
Best For
Soothing
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-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
3
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
1 study / 1 not sensitizing (CIR 771)
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2026
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR