Calcium Alginate

AKA: Alginic acid calcium salt
Synthetic
Marine
Clean
OriginDerived from brown seaweed (Phaeophyceae) through extraction of naturally occurring alginic acid. Produced by treating alginic acid with calcium salts to form calcium alginate polymer chains.
Alginic acid, calcium salt
CAS #
9005-35-0
Form
Powder
Skin Types
●all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Viscosity Controlling
Anti-Inflammatory
Wound Healing
Antimicrobial
Provides scent
Controls product thickness
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
1
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
Leave-on0.01–3%
Rinse-off0.01%
0%50%100%
CIR reported use · 2013 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR