Calcium Citrate
Calcium Citrate
CAL
9/10
Concern level
High concern
Calcium citrate is the calcium salt of citric acid used in cosmetics mainly as a buffer/pH-adjusting ingredient and, less commonly, as a mineral source or formulation aid. It is a white, odorless, water-insoluble to sparingly soluble powder with low skin activity and minimal direct treatment benefit.
Pore-clogging
Non-comedogenic
Pregnancy
Safe
Regulatory
No data
Chemical Properties
Molecular Weight
498.43 g/mol pH Range
6.00 - 8.00Typical Concentration
0.10% - 2.00%CAS Number: 813-94-5
Skin Type Compatibility
dry skin6/10
oily skin7/10
sensitive skin8/10
acne prone7/10
mature skin6/10
normal skin8/10
Interactions
incompatible with: May reduce efficacy of some preservative systems if it changes final pH outside the preservative's effective range, Can interact with other acids/bases through neutralization and pH drift, May affect stability of formulas sensitive to divalent mineral ions
Risks & Warnings
Generally low risk in rinse-off and leave-on products. Main concern is eye irritation if dust or concentrated dispersions contact the eyes. As a mineral salt, it is not expected to be sensitizing or comedogenic at typical cosmetic use levels.
Vegan Cruelty-Free
