Gigartina stellata extract

AKA: False Irish moss, Sometimes referred to as carrageenan (though this term can be broader)
Plant-Derived Synthetic
Skin Conditioner
Marine
Extract
Clean
Gigartina Stellata Extract is a cosmetic ingredient. Rated low hazard by EWG.
CAS #
223751-69-7
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.
Skin Protecting
Shields skin from damage
Traditional Use
A red seaweed traditionally harvested and used in East Asian and Celtic coastal communities for skin health and as a natural thickening agent in food and remedies.
EWG
1
CIR
Insufficient
Pregnancy
Yes
CIR Safety Findings
all-shades-safe
Moderate Irritant
Regulatory Status
USAunder review
EUrestricted
JAPANrestricted
CANADArestricted
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory0 listings
🛡️Safety-assessed2 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR