What Is It?
Calcium Oxide and Magnesium Oxide are white powders. In cosmetics and personal care products, Calcium Oxide is used in cleansing products, hair straighteners and skin care products. Magnesium Oxide is used in bath, hair and skin care products.
Why Is It Used?
Calcium Oxide and Magnesium Oxide are used as A measurement of the acidity or basicity of a substance. pH is the negative logarithm (base 10) of the concentration of hydrogen ions in solution. Water has a concentration of hydrogen ions of 1.0 x 10-7, and thus has a pH of 7. A pH of 7 is considered neutral, a pH lower than 7 is considered acidic, and a pH higher than 7 is considered basic. adjusters. Magnesium Oxide is also used as an ingredient to absorb or soak up liquids, and as an Substances that reduce the clear or transparent appearance of cosmetic products. Some opacifying agents are used in skin make-up for hiding blemishes. in skin make-up for hiding blemishes.
Calcium Oxide and Magnesium Oxide are minerals. Magnesium Oxide, or magnesia, is a white solid mineral that occurs naturally as periclase and is a source of magnesium. Calcium Oxide, also known as lime or quicklime, is obtained from limestone.
The Food and Drug Administration (FDA) includes Calcium Oxide and Magnesium Oxide on its list of direct food substances affirmed as Generally Recognized as Safe (“GRAS” is an acronym for the phrase Generally Recognized As Safe. Under sections 201(s) and 409 of the Federal Food, Drug, and Cosmetic Act (the Act), any substance that is intentionally added to food is a food additive, that is subject to premarket review and approval by FDA, unless the substance is generally recognized, among qualified experts, as having been adequately shown to be safe under the conditions of its intended use, or unless the use of the substance is otherwise excluded from the definition of a food additive.). Magnesium Oxide is also an approved ingredient for Over-the-Counter (OTC) antacid drug products. The The Cosmetic Ingredient Review (CIR) was established in 1976 as an independent safety review program for cosmetic ingredients. The CIR Expert Panel consists of independent experts in dermatology, toxicology, pharmacolgy and veterinary medicine. The CIR includes participation by the U.S. Food & Drug Administration and the Consumer Federation of America. (CIR) Expert Panel has deferred evaluation of Calcium Oxide and Magnesium Oxide 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 Magnesium Oxide http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr…
Link to FDA Code of Federal Regulations for Calcium Oxide http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr…
Calcium Oxide and Magnesium Oxide may be used in cosmetics and personal care products marketed in the Europe according to the Under the general provisions of the cosmetics regulation of the EU, ingredients appearing on the following function-specific annexes must comply with the listed restrictions and/or specifications: colorants (Annex IV), preservatives (Annex V), UV filters (Annex VI) and other ingredients with specific concentration limits and/or other restrictions (Annex III). Ingredients specifically prohibited from use in cosmetic products are listed in Annex II. Other ingredients listed in the EU cosmetic ingredient database (CosIng) may be used without restrictions..
Link to the EU Cosmetic Regulation:
More Scientific Information
Calcium Oxide and Magnesium Oxide are inorganic oxides. They are made up of one atom metal ion (calcium or magnesium) bound to one atom of oxygen. Calcium and Magnesium Oxide functions a pH adjusters. Magnesium Oxide also functions as an Ingredients that have the capacity to absorb or soak up liquids. and an opacifying agent.
Find out more about the regulation of Food Additives by the Food and Drug Administration
Food Ingredients and Packaging: http://www.fda.gov/Food/IngredientsPackagingLabeling/default.htm
Food Contact Substances: http://www.fda.gov/Food/IngredientsPackagingLabeling/PackagingFCS/defaul…
Substances Generally Recognized As Safe (GRAS): http://www.fda.gov/Food/IngredientsPackagingLabeling/GRAS/default.htm
Find out more about the regulation of over-the-counter drugs by the Food and Drug Administration
OTC Drug Home Page: http://www.fda.gov/Drugs/ResourcesForYou/Consumers/BuyingUsingMedicineSa…
Information about OTC Drug monographs: https://www.fda.gov/drugs/over-counter-otc-drug-monograph-process
Search the Code of Federal Regulations http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm
EU Cosmetics Inventory http://ec.europa.eu/consumers/cosmetics/cosing/