Stearic acid

Stearic acid is a naturally occurring fatty acid that is found in animal and vegetable fats. In dietary supplements, it is typically a combination of stearic and palmitic acids. Stearic acid is used as a lubricantin capsules and tablets and is also used widely in cosmetics and food products 1. It is used in topical formulations to assist in mixing ingredients and to stabilize oil-in-water mixtures 2.

Stearic acid is approved by the U.S. Food and Drug Administration (FDA) as generally recognized as safe (GRAS) (21CFR184.1090) and is generally regarded as a nontoxic and nonirritating material 1. It is also included in the U.S. FDA Inactive Ingredients Guide as safe to use in the amounts present in our products 3.

This ingredient can be found in the following products in United States:


  1. Handbook of Pharmaceutical Excipients. Gurnee, IL: Pharmaceutical Press, 2006.
  2. International Cosmetic Ingredient Dictionary and Handbook. Washington, D.C.: The Cosmetic, Toiletry and Fragrance Association, 2006.
  3. FDA Inactive Ingredients Guide. 2007.