Alginic Acid

AKA: Sodium alginate, Alginate
the anti aging day and night ritual
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Synthetic
Skin Conditioner
Acid
Clean
OriginAlginic acid is derived from brown seaweed (Phaeophyceae) through extraction of naturally occurring polysaccharides. It is isolated by treating seaweed with alkaline solutions to convert alginates into alginic acid form.
Alginic acid
CAS #
9005-32-7
Form
Liquid
State
Solid
Skin Types
●all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Binding
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Viscosity Controlling
Locks in moisture
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
CIR's newest survey reports no concentration of use.
CIR · 2013 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR