Calcium Carbonate, Magnesium Carbonate, Potassium Carbonate and Zinc Carbonate are all salts of carbonic acid. All of these ingredients are white powders. These carbonate salts are used in bath products, makeup products, personal cleanliness products, shaving products, oral care products and skin and hair care products.
Calcium Carbonate and Magnesium Carbonate are FDA approved as active ingredients in Over-the-Counter (OTC) antacid drug products. Zinc Carbonate is approved for use in OTC skin protectant drug products at concentrations of 0.2 to 2%. Calcium Cabonate is an FDA approved color additive for use in drugs.
The Cosmetic Ingredient Review (CIR) Expert Panel has deferred evaluation of these ingredients because the safety has been assessed by FDA. This deferral of review is according to the provisions of the CIR Procedures.Link to FDA Code of Federal Regulations for Calcium Carbonate
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
Link to FDA Code of Federal Regulations for Magnesium Carbonate
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
Link to FDA Code of Federal Regulations for Potassium Carbonate
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
Link to FDA Code of Federal Regulations for Zinc Carbonate
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
Calcium Carbonate, Magnesium Carbonate, Potassium Carbonate and Zinc Cabonate may be used in cosmetics and personal care products marketed in Europe according to the general provisions of the Cosmetics Directive of the European Union.
Link to the EU Cosmetics Directive:
http://ec.europa.eu/enterprise/cosmetics/html/consolidated_d...