CALCIUM CARBONATE
Commonly Found In
Overview
Calcium carbonate is one of the most abundant minerals on Earth, used in toothpastes as a mild abrasive and in face powders as a bulking and opacifying agent. It is inert, well-tolerated by skin, and generally recognized as safe. It functions as a gentle polish in oral care products.
Also known as: calcite, chalk, limestone, marble (geological form), E170 (food grade), precipitated calcium carbonate (PCC)
Key Benefits
Functions as a mild abrasive for tooth cleaning and as a bulking/opacifying agent in powder cosmetics. Studies suggest it is inert and non-sensitizing; no direct active skin-benefit beyond mechanical cleaning.
Supporting Research
- β’ CIR Expert Panel β Safety Assessment of Calcium Carbonate: Assessed as safe for cosmetic use; no significant toxicity or irritancy at typical concentrations
Skin Compatibility Ratings
Comedogenic Rating
Non-comedogenic; inert mineral with no occlusive properties
Source: CIR Expert Panel
Irritancy Rating
Very low irritancy; considered safe for topical and oral use
Source: CIR Expert Panel
Typical Use Concentration
Range
10β50% (toothpastes); 1β20% (powders)
Optimal
20β40% (toothpaste)
No regulatory concentration limit in cosmetics; used at high levels as primary abrasive in toothpaste.
Works Well With / Avoid
Works Well With
Use With Caution
Dissolves in acidic conditions (pH <5); best suited for neutral to alkaline formulations. Excellent in toothpaste and face powder applications.
Commonly Found In
Global Regulation Summary
Overview of current status across major international markets.
Detailed Regional Status
| Region | Status | Max Conc. | Conditions | Source |
|---|---|---|---|---|
| πͺπΊ EU | Allowed | - | - | Official β |
| πΊπΈ USA | Allowed | - | - | Official β |
| π―π΅ Japan | Allowed | - | - | Official β |
| π°π· Korea | Unknown | - | - | Official β |
| π¬π§ UK | Banned | - | Follows EU regulations (IV/124) | Official β |
π Why Regulations Differ
Widely permitted globally. EU Annex IV/124 lists it as a cosmetic colorant (permitted). Fully inert mineral; no human safety concerns at cosmetic concentrations.
Regulation Analysis
Regional Agreement
Banned in UK but allowed in EU, USA, Japan.
Category Comparison
There are 9 ingredients in the ABRASIVE category. 100% are banned in at least one major market.
Strictness Ranking
πΏ Natural Sources
One of the most abundant minerals on Earth. Found as chalk, limestone, and marble. Also the main component of seashells, coral, snail shells, and eggshells. Pearls are largely calcium carbonate.
π How It's Made
Mined from quarries worldwide or produced synthetically by reacting calcium hydroxide with carbon dioxide. The purest form (precipitated calcium carbonate) is made by calcining limestone and recarbonating the resulting lime.
π Uses in Cosmetics
Used primarily as a mild abrasive in toothpastes and tooth powders. Also used as a bulking agent in face and body powders. Functions as an opacifier and pH buffer at alkaline conditions.
π¬ Other Applications
Used in antacid tablets, as a food additive (E170), in paper manufacturing, as agricultural lime to reduce soil acidity, in construction (cement and mortar), and as a calcium dietary supplement.
π‘ Fun Facts
- β’ The White Cliffs of Dover are made almost entirely of calcium carbonate from the shells of tiny marine organisms that lived millions of years ago
- β’ Classroom chalk was traditionally made from calcium carbonate, though modern chalk often uses gypsum instead
- β’ Calcium carbonate is the most common calcium supplement β when you take an antacid tablet like Tums, you're eating calcium carbonate
Data Sources
- β’ EU Cosmetics Regulation 1223/2009 Annex IV entry 124
- β’ CIR Expert Panel β Safety Assessment of Calcium Carbonate
Last data verification: 2026-04-12
Related Ingredients
ALUMINUM SILICATE
KAOLIN
TALC
MAGNESIUM CARBONATE
Zinc White
ZINC OXIDE
BARIUM SULFATE
Learn More
Frequently Asked Questions
What is CALCIUM CARBONATE used for in cosmetics?
CALCIUM CARBONATE is primarily used for abrasive in cosmetic products. It also serves as buffering, bulking. The ingredient is commonly found in various cosmetic and personal care products.
Which countries regulate CALCIUM CARBONATE?
CALCIUM CARBONATE is banned in UK. The ingredient is freely allowed in EU, JP, US.
Are there alternatives to CALCIUM CARBONATE?
Due to regulatory restrictions on CALCIUM CARBONATE, cosmetic manufacturers often use alternative ingredients with similar functions. For abrasive, alternatives may include other approved ingredients in the same category. Consult product labels for specific formulations, and look for products compliant with your region's regulations.
Where can I find official regulation information about CALCIUM CARBONATE?
Official information about CALCIUM CARBONATE regulations can be found on government websites: EU CosIng database, US FDA Cosmetics page, Japan MHLW cosmetics standards, UK Government cosmetics guidance, and Korea MFDS. Always verify regulatory status with these official sources before making formulation decisions.
Disclaimer
The information on this website is for educational and informational purposes only and is not intended as medical advice. While we strive for accuracy based on official government databases, cosmetic regulations change frequently. Always consult with a qualified professional or refer to the latest official regulatory documents for compliance. We are not responsible for any actions taken based on the information provided here.