Calcium Ascorbate
AKA “Ascorbic acid calcium salt, Calcium diascorbate, Calcium ascorbate anhydrous, Hemicalcium ascorbate, Calci-C, L-Ascorbic acid, calcium salt (2:1), Calcium ascorbate (e 302)”
Vitamin
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Ingredient Facts
Calcium ascorbate
AKA: Ascorbic acid calcium salt, Calcium diascorbate, Calcium ascorbate anhydrous, Hemicalcium ascorbate, Calci-C, L-Ascorbic acid, Calcium salt (2:1), Calcium ascorbate (e 302)
Vitamin · Antioxidant | Anti-Aging | Skin Conditioning | Brightening | Skin Protecting · EWG: 2
Plant-Derived
Antioxidant
Anti-Aging
Brightener
Skin Conditioner
Barrier Support
Vitamin C
Vitamin
Clean
A stabilized form of vitamin C that protects skin from environmental damage and helps maintain a healthy, conditioned complexion.
Solubility INSOL IN ETHER
Formula
C12H14CaO12
Mol. Weight
390.31
CAS #
5743-27-1
Form
Powder
Plant-Derived
Synthetic. Calcium ascorbate is synthesized from ascorbic acid (vitamin C) and calcium carbonate or calcium hydroxide as starting materials. The two compounds are combined through a neutralization reaction to create the stable, salt form of vitamin C.
Function
Antioxidant | Anti-Aging | Skin Conditioning | Brightening | Skin Protecting
Benefits
Antioxidant protection
Locks in moisture
Neutralizes free radicals
Traditional Use
A stabilized form of vitamin C developed in the 20th century to improve the shelf-life and bioavailability of ascorbic acid in skincare products. Used in modern cosmetics since the 1980s as an antioxidant and collagen-boosting ingredient.
Skin Types
all-skin-types, gentle
Best For
Target
Dullness
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR