Calcium Carbonate

Balances the pH.

What it is

A white mineral powder, the main substance in chalk and limestone.

Used as a fine scrubbing powder, to add bulk, and to make the product opaque.

A short summary from the dictionary, not yet an in-depth article. About these entries

Balances the pHOfficial EU function: Buffering

Polishes or scrubsOfficial EU function: Abrasive

Makes the formula less see-throughOfficial EU function: Opacifying

Gives the textureOfficial EU function: Bulking

Used in oral careOfficial EU function: Oral care

Restricted in certain uses · Cosmetics, EU

Allowed as a colorant in EU cosmetics with conditions (Annex IV).

A label gives no amounts, so none of this says a product is unsafe.