Chemical Texture Services/Relaxers

Chemical hair relaxing

the process of rearranging the basic structure of extremely curly hair into a straight form

Chemical hair relaxing is very similar to

permanent waving

All relaxers and permanents change the shape of the hair by

breaking disulfide bonds

Most relaxers contain the same ingredients used in

depilatories

Extremely curly hair has

varying diameters

Extremely curly hair is weakest

at the twists

Thio relaxers have a pH

above 10

Each step in the pH scale represents a _______change in concentration

tenfold

Hydroxide relaxers remove one atom of sulfur from a disulfide bond and convert it into a lanthionine bond in a process called

lanthionization

The disulfide bonds that are broken by hydroxide relaxers

can never be reformed

The neutralization of hydroxide relaxers involves the use of

acid-balanced shampoo

If you have treated a client's hair with a hydroxide relaxer, it cannot be treated with

soft curl permanents

Metal hydroxide relaxers are ionic compounds formed by a metal combined with

oxygen and hydrogen

Sodium hydroxide relaxers are commonly called

lye relaxers

Guanidine hydroxide relaxer

a chemical relaxer that straightens the hair completely but with much less scalp irritation than other hydroxide relaxers

Sulfites

chemical relaxers marketed as mild alternative relaxers

Mild strength relaxers are recommended for

fine, damaged, or color-treated hair

The application for a virgin relaxer begins_______away from the scalp

¼" to ½"

Relaxers should be applied to the most resistant area first, which is usually

the back of the head

Normalizing solutions are conditioners with an acidic pH that are used in a relaxing procedure

prior to shampooing

To determine if the hair is sufficiently relaxed

do periodic strand testing

To neutralize hydroxide relaxer, shampoo the hair with an acid-balanced shampoo

at least three times

A soft curl permanent makes

existing curls larger

A Jheri curl or soft curl permanent is a combination of a thio relaxer and a

thio permanent

In a soft curl permanent, the hair is first relaxed, then

wrapped on horizontal base sections

When applying a hydroxide relaxer,

do not shampoo first

You should not attempt to remove more than ____ or the natural curl

80%