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Halidrys siliquosa extract
AKA “Halidrys siliquosa, Brown algae extract”
Extract
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Ingredient Facts
Halidrys siliquosa extract
AKA: Brown algae extract
Extract · Skin Conditioning · EWG: 3
Plant-Derived
Skin Conditioner
Marine
Extract
Not Clean
Halidrys Siliquosa Extract is the extract of the whole plant, Halidrys siliquosa
Plant Part
Whole Plant
CAS #
-
Form
Liquid
See origin →
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 used in traditional European coastal skincare practices for its mineral and trace element content. Historically valued in marine-based beauty preparations.
Skin Types
●all-skin-types
Best For
Dullness
Pregnancy & Breastfeeding Safe
Yes
EWG
3
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
Verified Jun 2026
Data: CosIng · EWG · CIR