MILADY COSMETOLOGY CHEMICAL TEXTURE
SERVICES PRACTICE EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2025
1. What determines the size of the curl in a permanent wave?
o The type of perm solution
o The length of the hair
o The size of the perm rod
o The strength of the neutralizer
The size of the rod determines the size and tightness of the curl
formed.
2. Which layer of the hair is primarily targeted during chemical texture
services?
o Medulla
o Cortex
o Cuticle
, o Epidermis
The cortex contains the disulfide bonds responsible for hair strength
and elasticity.
3. Sodium hydroxide relaxers are also known as:
o No-base relaxers
o Thio relaxers
o Keratin treatments
o Lye relaxers
Sodium hydroxide relaxers are often referred to as "lye" relaxers.
4. What is the main active ingredient in acid-balanced waves?
o Glyceryl monothioglycolate (GMTG)
o Hydrogen peroxide
o Ammonia
o Sodium bromate
GMTG is the primary reducing agent in acid-balanced perms.
5. Which of the following is an exothermic wave?
o A perm that requires heat from a dryer
o A perm that uses no heat
o A perm that generates its own heat through a chemical reaction
o A perm that uses steam
Exothermic waves create heat internally to process the perm.
, 6. What bonds are broken during permanent waving?
o Disulfide bonds
o Peptide bonds
o Salt bonds
o Hydrogen bonds
Permanent waving breaks disulfide bonds and reforms them in a
new shape.
7. Which neutralizer is most commonly used in permanent waving?
o Ammonia
o Sodium hydroxide
o Hydrogen peroxide
o Potassium thioglycolate
Hydrogen peroxide is a common neutralizing agent that reforms
disulfide bonds.
8. What is the pH range of most alkaline waves?
o 4.5–5.5
o 5.5–6.5
o 9.0–9.6
o 11.0–12.0
Alkaline waves have a high pH to swell the hair and open the
cuticle.
9. Thio relaxers use what type of chemical to straighten the hair?
SERVICES PRACTICE EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2025
1. What determines the size of the curl in a permanent wave?
o The type of perm solution
o The length of the hair
o The size of the perm rod
o The strength of the neutralizer
The size of the rod determines the size and tightness of the curl
formed.
2. Which layer of the hair is primarily targeted during chemical texture
services?
o Medulla
o Cortex
o Cuticle
, o Epidermis
The cortex contains the disulfide bonds responsible for hair strength
and elasticity.
3. Sodium hydroxide relaxers are also known as:
o No-base relaxers
o Thio relaxers
o Keratin treatments
o Lye relaxers
Sodium hydroxide relaxers are often referred to as "lye" relaxers.
4. What is the main active ingredient in acid-balanced waves?
o Glyceryl monothioglycolate (GMTG)
o Hydrogen peroxide
o Ammonia
o Sodium bromate
GMTG is the primary reducing agent in acid-balanced perms.
5. Which of the following is an exothermic wave?
o A perm that requires heat from a dryer
o A perm that uses no heat
o A perm that generates its own heat through a chemical reaction
o A perm that uses steam
Exothermic waves create heat internally to process the perm.
, 6. What bonds are broken during permanent waving?
o Disulfide bonds
o Peptide bonds
o Salt bonds
o Hydrogen bonds
Permanent waving breaks disulfide bonds and reforms them in a
new shape.
7. Which neutralizer is most commonly used in permanent waving?
o Ammonia
o Sodium hydroxide
o Hydrogen peroxide
o Potassium thioglycolate
Hydrogen peroxide is a common neutralizing agent that reforms
disulfide bonds.
8. What is the pH range of most alkaline waves?
o 4.5–5.5
o 5.5–6.5
o 9.0–9.6
o 11.0–12.0
Alkaline waves have a high pH to swell the hair and open the
cuticle.
9. Thio relaxers use what type of chemical to straighten the hair?
