ph-adjuster
Sodium Metaphosphate
Generally safe·Limited evidence
An inorganic salt used as a chelating agent and pH buffer in cosmetics. Direct topical safety data is limited, but it is considered safe at concentrations used in cosmetic formulations.
References
Cosmetic information for general education, not medical advice. A verdict is a reading of the published evidence, never a guarantee for your skin: any ingredient can irritate someone, so patch test new products and see a professional if you react. Concern is graded on cited evidence, never on hazard-score lists. See how we score.