Monosodium Citrate
Monosodium Citrate
MON
9/10
Concern level
High concern
Monosodium citrate is the monosodium salt of citric acid, used in cosmetics primarily as a buffering and pH-adjusting agent. It helps stabilize formulas by resisting pH drift and can support chelation and formulation performance in water-based products.
Pore-clogging
Non-comedogenic
Pregnancy
Safe
Regulatory
No data
Chemical Properties
Molecular Weight
214.1 g/mol pH Range
3.00 - 7.00Typical Concentration
0.10% - 2.00%CAS Number: 18996-35-5
Skin Type Compatibility
dry skin8/10
oily skin8/10
sensitive skin8/10
acne prone9/10
mature skin8/10
normal skin9/10
Interactions
incompatible with: strong acids or strong bases that overwhelm buffering capacity, metal-sensitive formulas where a dedicated chelator is required
Risks & Warnings
Generally low risk in cosmetic use. At high concentrations or in very acidic/highly alkaline systems, it may contribute to stinging or irritation. As a salt/buffer, it is not typically considered sensitizing or comedogenic.
Vegan Cruelty-Free
