Hydroxide relaxers remove a sulfur atom from a disulfide bond, converting it into a(n): 

A basic haircut where the hair is cut at a 180-degree angle is the: 

A guideline used in a blunt, one-length haircut, or used in overdirection to create a length or weight increase is a(n): 

To reduce strain on the index finger and thumb while cutting hair, it is important to: 

Hair is composed of protein that grows from cells originating within the: 

When you are building weight in a haircut, the hair should be held:

Any client with an infectious disease should not be serviced and should be referred to a:

Natural nails should filed: 

Do not massage or manipulate a client’s scalp if you detect the presence of: 

The hand position that is used most often when cutting uniform or increasing layers is: