What it is
Perlite is an amorphous volcanic glass that, when heated, expands into a lightweight porous powder due to the water trapped within it. In cosmetics this porous structure makes it useful as an absorbent that can take up oil and help impart a soft, matte feel. It also serves as a bulking and texturizing agent, lending body to powders and emulsions.
Safety & warnings
Perlite in cosmetic grades is an inert mineral powder and is generally well tolerated on the skin. It is not a recognized fragrance allergen and is not considered comedogenic. As with any fine powder, care is taken during manufacturing to limit dust inhalation, but this is a handling consideration rather than a finished-product skin concern.
Origin & sourcing
Natural mineral origin; mined volcanic glass that is processed and expanded by heat.
Questions everyone asks
What is perlite made from?
It is a naturally occurring volcanic glass that is expanded by heating into a lightweight, porous powder.
Why is perlite used in sunscreens?
Its porous structure absorbs oil and helps create a soft, matte feel, and it also acts as a bulking and texturizing powder.