murphyAlgae Exopolysaccharides
molecular structure · PubChem
AKA: Seaweed polysaccharide, Marine biopolymer
Synthetic
Humectant
Occlusive
Skin Conditioner
Barrier Support
Marine
Not Clean
OriginDerived from fermentation of microalgae species belonging to the Rhodophyta and Chlorophyta divisions.
Produced through controlled fermentation of microalgae cultures, which release polysaccharides that are then isolated and processed.
Algae Exopolysaccharides are exopolysaccharides released by the fermentation of various species of microalgae of the divisions, Rhodophyta and Chlorophyta.
CAS #
-
Form
Powder
Skin Types
●all-skin-types
Best For
Dehydration
Pregnancy & Breastfeeding Safe
Yes
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
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
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
CIR Safety Findings
Not a Skin Irritant
1 study / 1 not irritating (CIR 680)
Not a Sensitizer
1 study / 1 not sensitizing (CIR 680)
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2015
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR