What it is
Diatomaceous Earth is a naturally occurring sedimentary mineral composed largely of silica from the fossilized shells of diatoms. Its porous structure makes it effective at absorbing oil and moisture, which helps reduce shine and impart a soft, matte feel. In sunscreens and primers it can contribute to a powdery, airy finish and help control surface oil.
Safety & warnings
As a topical cosmetic powder, diatomaceous earth is generally well tolerated and valued for oil absorption. The cosmetic grade is distinct from materials used in other industries, and as with any fine powder, care during handling helps avoid inhaling loose dust.
Origin & sourcing
Natural; mined from sedimentary deposits formed by the fossilized silica shells of diatoms, then processed into a fine powder.
Questions everyone asks
What is diatomaceous earth made of?
It is a silica-rich mineral powder formed from the fossilized shells of microscopic algae called diatoms.
Why is it used in sunscreens and primers?
Its porous structure absorbs oil and helps create a soft, matte, powdery finish on the skin.