Cosmetic ingredient

DICALCIUM PHOSPHATE DIHYDRATE

Dicalcium Phosphate Dihydrate is an inorganic calcium phosphate, also called dibasic calcium phosphate dihydrate. Its hydrated mineral form is known as brushite; in products, it is a mineral powder incorporated into a formula, especially in oral-care preparations.

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CAS number
7757-93-9 / 7789-77-7
EC number
231-826-1
Chemical name
Calcium hydrogenorthophosphate

DICALCIUM PHOSPHATE DIHYDRATE: what it is

Dicalcium Phosphate Dihydrate is an inorganic calcium phosphate, also called dibasic calcium phosphate dihydrate. Its hydrated mineral form is known as brushite; in products, it is a mineral powder incorporated into a formula, especially in oral-care preparations.

The word dihydrate distinguishes this form from dicalcium phosphate without water bound in its crystal form. That distinction does not make it a plant extract or a source of calcium for skin: it is included for the physical behavior of its particles within the finished product.

DICALCIUM PHOSPHATE DIHYDRATE: what it does in cosmetics

In toothpaste, Dicalcium Phosphate Dihydrate can act as an abrasive: fine particles help remove surface debris during brushing. Its oral-care use reflects that setting; as an opacifying ingredient, it can also help make a paste look less translucent.

Studies have included this phosphate as the abrasive in toothpastes, but they compared complete formulas containing other ingredients and different technologies. Those results do not show that the isolated ingredient whitens teeth, prevents cavities, or gives the same result in every toothpaste.

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