Calcium Carbonate is a naturally occurring mineral also known as chalk. In cosmetics it's used as an absorbent and opacifier to mattify oily areas, refine feel, and add mild polishing in cleansers or toothpaste.
Chalk-like mineral that mattifies oily skin and softens texture.
Category
Oil Control, Tone/Texture
Type
Mineral
Ingredient Ratings
Overall Rating
Good
Comedogenic Risk
None
Skin Benefits
Helps control shine for a longer-lasting matte look and a smoother-looking surface, and can provide a soft blurring effect and light polishing feel.
Uses In Skincare & Cosmetics
Used in setting powders, mattifying primers, and clay masks for oil control, and in cream cleansers or toothpastes for mild polishing.
Comedogenic Rating
This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.
Safety
Low inherent irritation risk; overuse may lead to dryness or mild mechanical rubbing in abrasive formats. Avoid inhaling loose powder and keep away from eyes.
Is Calcium Carbonate a Good Ingredient?
It's a stable, effective mineral absorbent and opacifier that reduces shine and improves slip, which earns a Good rating, though high levels can feel chalky or drying in some formulas.