INCI · other · CIR review pending · used in 5 products
Sodium Phosphate
Sodium Phosphate is an inorganic salt with the CAS numbers 7558-80-7 / 7632-05-5, also known by its chemical/IUPAC name Sodium Dihydrogenorthophosphate and Ph. Eur. name Natrii Dihydrogenophosphas. It is used in cosmetic and personal care formulations primarily as a buffering agent to help maintain and stabilize the pH of a product. It appears across a wide range of product types including serums, shampoos, mouthwashes, and gels.
Evidence level
strongEWG score
—Comedogenic
—Category
other● Benefits
Sodium Phosphate functions as a buffering agent, helping to keep formulations at a stable, intended pH level. A stable pH supports the efficacy and safety of other ingredients in the formula. It does not have direct skin-active benefits as described in the source.
buffering
● Cautions
