Halidrys siliquosa extract

AKA: Sea-oak, Brown algae extract
Plant-Derived
Skin Conditioner
Extract
Not Clean
OriginNative to Atlantic, North Europe. Halidrys siliquosa is a brown seaweed species native to Atlantic and North European coastal waters. The extract is obtained through solvent extraction of the whole plant material.
Halidrys Siliquosa Extract is the extract of the whole plant, Halidrys siliquosa
Plant Part
Whole Plant
CAS #
-
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 →
⚖️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)
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR