Calcium Alginate
AKA “Alginic acid calcium salt
Extract
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Ingredient Facts
Calcium alginate
AKA: Alginic acid calcium salt
Extract · Viscosity Controlling | Film Forming | Skin Conditioning · EWG: 1
Plant-Derived
Occlusive
Skin Conditioner
Marine
Extract
Clean
A natural thickener derived from seaweed that gives products the right texture and consistency for smooth application.
CAS #
9005-35-0
Form
Powder
Plant-Derived
Synthetic. Derived 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.
Function
Viscosity Controlling | Film Forming | Skin Conditioning
Benefits
Viscosity Controlling
Anti-Inflammatory
Wound Healing
Antimicrobial
Provides scent
Controls product thickness
Traditional Use
Derived from brown seaweed (kelp), alginates have been used for centuries in Asian cuisines and traditional medicine. Modern extraction and use in cosmetics as a thickening, film-forming, and moisturizing agent began in the 20th century.
Skin Types
all-skin-types, gentle
Best For
Target
General
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score1
CIR Safety Findings
ewg-1, medical-approval, pregnancy-nursing-safe, all-shades-safe, Not a Sensitizer
Concentration Guide
Dermal absorption: 2%. Source: CIR Safety Assessment (CIR Seq 680).
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR