Laminaria longissima extract

Laminaria longissima extract 1
photograph
AKA: Longissima Kelp Extract, Long-leafed Kelp Extract
Plant-Derived
Humectant
Extract
Not Clean
OriginNative to North Atlantic, Northern Europe. Derived from Laminaria longissima, a brown algae species native to the North Atlantic and Northern Europe. Extracted from the algal thallus using solvent extraction methods.
Laminaria Longissima Extract is the extract of the alga, Laminaria longissima
Family
Laminariaceae (Brown Algae)
Plant Part
Thallus
CAS #
-
Form
Liquid
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Functions
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Locks In Moisture
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.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2026
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR