* Bulking agent: It adds volume to the product.
* Opacifier: It makes the product less transparent.
* Abrasive: It can provide gentle exfoliation.
* pH adjuster: It can help to neutralize acidic ingredients.
Here are some types of cosmetic products that may contain limestone/calcium carbonate:
* Toothpaste: Acts as a mild abrasive to help remove surface stains.
* Face powders: Used as a filler and opacifier.
* Foundations and concealers: Provides coverage and texture.
* Blush and eyeshadow: Contributes to the color and texture.
* Deodorants and antiperspirants: Can help absorb moisture.
* Sunscreens: Used as a UV filter, though it's typically used in conjunction with other sunscreen agents.
* Scrubs and exfoliants: Provides gentle abrasive action.
* Bath bombs and bath salts: Provides bulk and can contribute to fizzing action.
* Soaps: Can contribute to hardness and lather.
It's important to note:
* The specific ingredients list on a product will use the chemical name "calcium carbonate."
* The amount of calcium carbonate used varies depending on the product and its intended function.
* Calcium carbonate is generally considered safe for cosmetic use, but some individuals may be sensitive to it.