What it is
Barium sulfate is a fine, chemically inert white powder used in cosmetics to add opacity, whiteness, and a soft-focus, blurring appearance. It can serve as a bulking and texturizing filler that contributes to smooth application and an even finish. In sunscreens and color products it helps with coverage and the overall optical look of the film.
Safety & warnings
As used in cosmetics, barium sulfate is a highly insoluble, inert powder that is not absorbed and is generally regarded as well tolerated and non-irritating. Its insolubility is key, distinguishing it from soluble barium salts.
Origin & sourcing
It is an inorganic mineral compound; cosmetic grades are typically the synthetic precipitated form known as blanc fixe, though it also occurs naturally as the mineral barite.
Questions everyone asks
Why is barium sulfate added to sunscreens?
It acts as an opacifying and bulking agent that adds whiteness and a soft-focus look, helping coverage and the even appearance of the finished film.
Is barium sulfate safe in cosmetics?
The cosmetic-grade powder is highly insoluble and inert, is not absorbed, and is generally considered well tolerated and non-irritating.