Cosmetology Test Chemical Texture Services 4

Question 1

What is the role of ammonium hydroxide in an alkaline permanent wave solution?

Accepted Answer

It swells the hair shaft and raises the cuticle to allow penetration

Answer

Ammonium hydroxide raises the pH and swells the hair shaft, lifting the cuticle so the thioglycolate can penetrate and break disulfide bonds.

Question 2

A client has a history of scalp sensitivity. Which type of relaxer would be most appropriate?

Accepted Answer

Guanidine hydroxide (no-lye) relaxer

Answer

Guanidine hydroxide (no-lye) relaxers have a slightly lower pH than sodium hydroxide relaxers and are generally better tolerated by sensitive scalps.

Question 3

What is 'base relaxer application' used for?

Accepted Answer

Coating the entire scalp with base cream before applying relaxer

Answer

A base application means the scalp is fully coated with protective base cream before relaxer application to protect sensitive scalp skin.

Question 4

When performing a perm on hair that has been previously highlighted, the cosmetologist should:

Accepted Answer

Perform a careful strand test and use a gentle formula

Answer

Highlighted hair is already porous and potentially weakened; a strand test and gentle perm formula help prevent over-processing and breakage.

Question 5

What is the purpose of using end papers during a perm wrap?

Accepted Answer

To smooth and control hair ends to prevent fishhook bends

Answer

End papers smooth and fold around the hair ends, preventing them from buckling or creating an uneven 'fishhook' curl at the tip.

Cosmetology Test Practice Test