Category: A

An allergy to an ingredient or a chemical, usually caused by repeated skin contact with the chemical. Contact dermatitis is a form of skin inflammation triggered by an allergic reaction to a substance that is typically harmless for the majority of individuals. Common culprits include nickel and rubber.  

Alkaline substances used to neutralize acids or raise the pH of many hair products.  

Also known as cold waves; have a pH between 9.0 and 9.6, use ammonium thioglycolate (ATG) as the reducing agent, and process at room temperature without the addition of heat.  

Alipidic literally means “lack of lipids.” Describes skin that does not produce enough sebum, indicated by absence of visible pores.  

A common thermoplastic used to make light, rigid, molded nail tips.  

Permanent waves that have a 7.0 or neutral pH; because of their higher pH, they process at room temperature, do not require the added heat of a hair dryer, process more quickly, and produce firmer curls than true acid waves.  

Muscle that moves the toes and helps maintain balance while walking and standing.  

System that creates energy for activities that last less than 2 minutes or have frequent rest periods.  

The ongoing demand on the body from long-term exposure to stress hormones. The cost the organism pays when subjected to chronic stressors. Region of the cerebral hemispheres and part of the limbic system responsible for mediating emotional responses, particularly fear and anxiety.  

System that provides energy for activities lasting longer than 2 minutes. This system requires oxygen.