Glossary Terms – D


decreasing agent

Substances that decrease the thickness of liquid cosmetic products


A demulcent is an agent that forms a soothing film when put onto the surface of a mucous membrane, such as the inside of the mouth. A demulcent is meant to relieve the irritation of the inflamed mucous membrane.


Ingredients added to ethyl alcohol (grain alcohol) to make it unsuitable for drinking, usually by imparting an intensely bitter taste. In the United States, the use of denaturants are controlled by the Alcohol and Tobacco Tax and Trade Bureau in the Department of Treasury.

Deodorant Agent

Ingredients that reduce or eliminate unpleasant odor and that protect against the formation of such odors on the skin.

Depilating Agent

Ingredients that chemically break down hair fibers so that unwanted hair can be removed by simply wiping it from the skin.


The purified liquid product obtained by the condensation of the vapors produced by boiling a liquid.

Drug Astringent – Oral Health Care Drug

Ingredients that draw together or constrict body tissues and that are effective in stopping the flow of blood or other secretions. In the Unites States, drug astringents – oral health care drugs are regulated as Over-The-Counter (OTC) drug ingredients.