Calcium Ascorbate




AKA: Ascorbic acid calcium salt, Calcium diascorbate, 5743-27-1, Calcium ascorbate anhydrous, Hemicalcium ascorbate, Calci-C, L-Ascorbic acid, Calcium salt (2:1), Calcium ascorbate (e 302)
Synthetic
Antioxidant
Skin Conditioner
Vitamin C
Clean
L-ascorbic acid, calcium salt (2:1)
Solubility INSOL IN ETHER
Formula
C12H14CaO12
Mol. Weight
390.31
CAS #
5743-27-1
Form
Powder
State
White to slightly pale greyish-yellow odourless crystalline powder
Functions
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
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
Dullness
Pregnancy & Breastfeeding Safe
Yes
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.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR