INCI · other · CIR review pending · used in 1 products
Sodium Metaphosphate
Sodium Metaphosphate is an inorganic sodium salt of metaphosphoric acid with CAS numbers 10361-03-2 and 50813-16-6. According to CosIng, its official functions are buffering, chelating, and oral care. It is used in a wide range of cosmetic formulations including toners, serums, cleansers, and lotions.
Evidence level
weakEWG score
—Comedogenic
—Category
other● Benefits
Sodium Metaphosphate serves primarily as a pH buffering agent and chelating agent in cosmetic formulations, helping to stabilize product pH and bind metal ions that could otherwise degrade formula integrity. Its role is functional rather than directly skin-active.
bufferingchelating
● Cautions
