Absorbent

Calcium Carbonate

INCI: Chalk

Reviewed by Rosie · Last updated 18 Aug 2026

Also known as: Chalk

Used as an absorbent in cosmetics

What Is Calcium Carbonate?

Calcium Carbonate is a powerful active ingredient known for its beneficial effects on the skin. It works at the cellular level to promote healthier, more radiant skin. This ingredient is widely used in professional skincare formulations for its proven efficacy.

When used regularly in a skincare routine, Calcium Carbonate can help improve overall skin health and appearance. It is suitable for various skin types and works well in combination with other beneficial ingredients.

Benefits for Your Skin

From the Clinic

Not sure what your skin actually needs?

Two minutes, a few questions, and we’ll point you at what matters — no guesswork.

Take the skin quiz

Learn More About Skincare Ingredients

Explore our comprehensive ingredient glossary to understand what's in your products.

Browse All Ingredients

Authorised Stockist

Official UK retailer

Tracked Delivery

Free UK shipping over £50

5 Star Rating

Trusted by thousands

Expert Advice

Free consultations