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Phosphoric Acid

PHOSPHORIC ACID

Data confidence:High

Function

pH Adjuster, Chelating Agent, Humectant

EWG Safety Score

3/10Moderate concern

About this ingredient

Phosphoric acid is a weak inorganic acid used in cosmetics primarily as a pH buffer and chelating agent to stabilize formulations and prevent oxidation. It adjusts the pH of skincare products to skin-compatible levels and can provide mild exfoliating properties at higher concentrations.

Found in 1+ sunscreens