What it is
Pearl powder is produced by grinding pearls into a fine powder that is largely calcium carbonate with trace proteins. In tone-up and sun care products it is used to add a soft, light-diffusing finish and to contribute to a brightening visual effect. It is typically used at low levels as a powder additive.
Safety & warnings
Pearl powder is generally well tolerated topically. As an animal-derived, mainly calcium carbonate material, it is not considered a notable allergen or comedogen, though it is not suitable for those avoiding animal-sourced ingredients.
Origin & sourcing
Pearl powder is a natural, animal-derived material made by milling pearls produced by mollusks.
History
Pearl powder has a long history of cosmetic use in East Asia, where it has traditionally been valued for imparting a luminous appearance to the skin.
Questions everyone asks
What is pearl powder made of?
It is finely milled pearl, composed predominantly of calcium carbonate with small amounts of protein.
What does it do in a tone-up sunscreen?
It acts as a light-diffusing powder that contributes to a soft, brightened finish rather than to UV protection.