Shampoo that can leave the hair dry and brittle and cause fading in color-treated hair is:

When manipulating the scalp during a shampoo, begin at the front hairline and work in a(n):

The second ingredient that most shampoos have in common is the base detergent or:

To prevent fatigue, muscle aches, and back strain when performing a shampoo, maintain good:

State agencies set guidelines for the manufacturing, sale, and use of equipment and chemical ingredients.

Disinfectants must be registered with the EPA.

A reaction due to extreme sensitivity to certain foods, chemicals, or other normally harmless substances is a(n):

Products that do not remove artificial color from the hair are considered to be:

When cutting with a vertical or diagonal cutting line, the best way to maintain control of the subsection is to cut:

The uniform working areas used for control during haircutting are called: