Calcium Carrageenan
AKA “Carrageenan calcium salt”
Ingredient
Ingredient Facts
Calcium carrageenan
AKA: Carrageenan calcium salt
Ingredient · Emulsion Stabilising · EWG: 1
Synthetic
Occlusive
Emulsifier
Marine
Clean
Carrageenan, calcium salt
CAS #
9049-05-2
Form
Powder
See origin →
Functions
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Viscosity Controlling
Anti-Inflammatory
Boosts Collagen
Antimicrobial
Creates protective layer
Keeps product blended
Controls product thickness
Traditional Use
Derived from red seaweed (carrageenan), which has been used in Celtic and Asian cuisine for centuries. The calcium salt form was developed in the 20th century as a gelling and thickening agent for modern skincare formulations.
Skin Types
●all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-1
medical-approval
pregnancy-nursing-safe
all-shades-safe
Concentration Guide
Dermal absorption: 2%. Source: CIR Safety Assessment (CIR Seq 680).
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR