Sargassum horneri extract

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AKA: Devil weed, Alga
Plant-Derived
Skin Conditioner
Marine
Extract
Not Clean
Sargassum Horneri Extract is the extract of the Alga, Sargassum horneri
Family
Sargassaceae
Plant Part
Thallus
CAS #
-
Form
Liquid
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
Traditional Use
A brown seaweed with traditional use in East Asian medicine and food preparation. Historically incorporated into skincare for its emollient and nutrient properties.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
medical-approval
all-shades-safe
Moderate Irritant
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types
Best For
Dullness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR