Cosmetology Chemical Services 2

Question 1

What volume developer is most commonly used for a standard permanent haircolor application?

Accepted Answer

20 volume

Answer

20 volume (6% hydrogen peroxide) developer is the standard strength used for permanent haircolor to provide one to two levels of lift.

Question 2

A thio-free (acid-balanced) perm uses which active ingredient?

Accepted Answer

Glyceryl monothioglycolate

Answer

Acid-balanced perms use glyceryl monothioglycolate as the active ingredient and require heat to process, making them gentler and better for color-treated hair.

Question 3

What is the primary purpose of performing a strand test before a chemical service?

Accepted Answer

Predict the processing time and results

Answer

A strand test is performed to predict how the hair will react to the chemical service, helping determine processing time, color result, or potential damage.

Question 4

Hair that is overly porous and has been previously lightened is considered:

Accepted Answer

Damaged, high-porosity hair

Answer

Heavily lightened hair becomes damaged with a raised cuticle, making it highly porous and prone to absorbing chemicals too quickly and unevenly.

Question 5

When relaxing previously relaxed hair (a retouch), the chemical is applied only to the:

Accepted Answer

New growth only

Answer

During a relaxer retouch, the product is applied only to the new, unprocessed growth to avoid over-processing the previously relaxed hair.

Cosmetology Practice Test

Cosmetology Practice Test

Cosmetology Chemical Services 2