What it is
Phytic acid is a phosphorus-rich organic acid abundant in seeds, grains, and legumes, where it stores phosphate. In cosmetics it is valued chiefly as a chelating agent that binds metal ions to help stabilize formulas, and it also acts as a mild acidic exfoliant and antioxidant. In sunscreens it most often functions in a stabilizing or chelating role rather than as an active treatment ingredient.
Safety & warnings
Generally well tolerated at cosmetic use levels. As an acid it can contribute to a low formula pH and may be mildly exfoliating, so very sensitive skin could experience tingling; it is not a recognized allergen and is not associated with comedogenicity.
Origin & sourcing
Natural; derived from plant sources such as cereal grains, legumes, and seeds, where it occurs as the storage form of phosphorus.
Questions everyone asks
What is the main role of phytic acid in cosmetics?
It is most often used as a chelating agent that binds metal ions to help keep a formula stable, and it can also act as a mild exfoliant and antioxidant.
Is phytic acid an exfoliating acid?
It is a mild acid that can have a gentle exfoliating effect, though it is generally less aggressive than common alpha hydroxy acids.