Cosmetology Test Scientific Concepts Questions and Answers

Question 1

A client's hair feels dry and brittle after a recent color service.
A post-color conditioner is recommended to help restore the hair's integrity.
To be effective, this conditioner should have a pH that is:

Accepted Answer

Slightly acidic, to help close the hair cuticle.

Answer

Neutral (pH of 7.0) to balance the hair.

Answer

The same as the hair color, to lock in the molecules.

Answer

Highly alkaline, to further open the cuticle for treatment.

Question 2

Which layer of the hair shaft is responsible for providing the hair with its natural color, strength, and elasticity?

Accepted Answer

Cortex

Answer

Cuticle

Answer

Medulla

Answer

Hair follicle

Question 3

A client has a common cold and is sneezing in the salon. The cosmetologist understands that this illness is caused by which type of pathogenic microorganism?

Accepted Answer

Virus

Answer

Fungus

Answer

Bacteria

Answer

Parasite

Question 4

During a permanent waving service, the chemical solution breaks the disulfide bonds in the hair's cortex. The subsequent application of the neutralizer performs what function?

Accepted Answer

It reforms the disulfide bonds in their new shape.

Answer

It hardens the salt bonds permanently.

Answer

It dissolves the hydrogen bonds.

Answer

It adds temporary color to the hair.

Question 5

Which of the following is the active growth phase of the hair growth cycle, during which new hair is produced?

Accepted Answer

Anagen

Answer

Catagen

Answer

Telogen

Answer

Exogen

Question 6

In a facial treatment for acne-prone skin, a cosmetologist uses a high-frequency machine with a glass electrode. What is the primary benefit of this current for this skin type?

Accepted Answer

It has a germicidal and antiseptic effect.

Answer

It provides deep muscle stimulation.

Answer

It infuses water-soluble products into the skin.

Answer

It cools and soothes inflamed skin.

A client's hair feels dry and brittle after a recent color service.A post-color conditioner is recommended to help restore the hair's integrity.To be effective, this conditioner should have a pH that is:

A client's hair feels dry and brittle after a recent color service.
A post-color conditioner is recommended to help restore the hair's integrity.
To be effective, this conditioner should have a pH that is: