Texas Class A Barber Written ExamChemical ServicesEasy
When performing a permanent wave service, what is the purpose of applying a neutralizer (oxidizer) after the waving lotion has been thoroughly rinsed from the hair?
- ATo add shine and seal the cuticle layers of the hair
- BTo condition the hair and restore its natural pH balance
- CTo soften the hair and make it more pliable for styling
- DTo halt the action of the waving lotion and rebuild the disulfide bonds
Show answer & explanationAnswer & explanation
Correct answer: D. To halt the action of the waving lotion and rebuild the disulfide bonds
The neutralizer in a permanent wave service stops the chemical action of the waving lotion and reforms the disulfide bonds in their new, curled shape, thereby setting the perm.
Why the other options are wrong
- A. Adding shine and sealing the cuticle are benefits of conditioning treatments, not the main role of a neutralizer.
- B. While some neutralizers may have conditioning agents, their primary role is chemical, not pH restoration or conditioning.
- C. Softening and pliability are not the primary chemical functions of a neutralizer.
Perm Neutralizer Function
A perm neutralizer stops the waving lotion's action and reforms disulfide bonds, locking the new curl pattern.
- Typically contains hydrogen peroxide or sodium bromate
- Re-hardens the hair
- Essential for lasting curl pattern
Memory trick: Neutralizer 'stops' the perm and 'locks' the curl.