Himanthalia elongata extract

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AKA: Thongweed, Alga
Plant-Derived
Barrier Support
Extract
Not Clean
Himanthalia Elongata Extract is an extract of the thallus of the Alga, Himanthalia elongata, Himanthaliaceae
Family
Himanthaliaceae
Plant Part
Thallus
CAS #
223751-70-0
Form
Liquid
Functions
Skin Protecting
Helps rebuild and strengthen your skin barrier — the invisible shield that keeps moisture in and irritants out. Essential after over-exfoliating or harsh weather.
Nourishes & Protects
Traditional Use
A brown seaweed traditionally used in Celtic coastal regions for food and medicine. Modern skincare use builds on historical kelp and seaweed applications for mineral content and skin conditioning.
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