332A Chemical Texture Services

Question 1

What chemical bond in the hair is permanently rearranged during a perm?

Accepted Answer

Disulfide bond

Answer

Hydrogen bond

Answer

Salt bond

Answer

Peptide bond

Question 2

What is the active ingredient in most alkaline (cold wave) perm solutions?

Accepted Answer

Ammonium thioglycolate

Answer

Hydrogen peroxide

Answer

Sodium hydroxide

Answer

Glyceryl monothioglycolate

Question 3

What is the purpose of the neutralizer in a perm?

Accepted Answer

To oxidize and reform the disulfide bonds in their new configuration

Answer

To break the disulfide bonds

Answer

To soften the cuticle for rod placement

Answer

To condition the hair after processing

Question 4

What determines the size of the curl in a permanent wave?

Accepted Answer

The size of the perm rod used

Answer

The strength of the perm solution

Answer

The processing time

Answer

The type of neutralizer

Question 5

What is the difference between an alkaline perm and an acid perm?

Accepted Answer

Alkaline perms have a higher pH and process faster; acid perms have a lower pH and are gentler on the hair

Answer

There is no difference

Answer

Acid perms are stronger than alkaline perms

Answer

Alkaline perms are used only on coloured hair

Question 6

What is a base cream or barrier cream used for in permanent waving?

Accepted Answer

To protect the scalp and skin around the hairline from chemical irritation

Answer

To improve curl formation

Answer

To speed up processing time

Answer

To help the perm solution penetrate the hair