What it is
This ingredient is a phosphate ester bearing fluorinated alcohol chains, used chiefly as a coating to treat the surfaces of mineral UV filters such as titanium dioxide and zinc oxide and of color pigments. The treatment makes the particles easier to disperse uniformly and helps them resist clumping and migration in the formula. The result is a more even pigment and filter layer in tinted and mineral sunscreens.
Safety & warnings
As a particle-coating agent used at low levels and largely confined to the product film, it is generally regarded as well tolerated in leave-on cosmetics. It is found mainly in mineral and tinted products where pigment dispersion matters; no prominent allergen or comedogenicity concerns are commonly associated with it at typical use levels.
Origin & sourcing
Synthetic; manufactured as a fluorinated phosphate ester for use as a particle surface treatment.
Questions everyone asks
Why coat sunscreen particles with this ingredient?
Surface treatment helps mineral filters and pigments disperse evenly and resist clumping, giving a smoother, more uniform film.
Is it a UV filter?
No. It is a surface modifier that improves how the actual filters and pigments behave in the formula.