NIC Cosmetology Written (Theory) ExamHair Care and ServicesMedium
A cosmetologist is performing a curl reforming service (soft curl perm) on a client. After the hair has been wrapped and processed with the waving lotion, and thoroughly rinsed, what product is applied next to chemically rebuild the disulfide bonds in their new curly shape?
- AThio-neutralizing solution
- BLeave-in conditioner
- CActivator
- DPre-wrap lotion
Show answer & explanationAnswer & explanation
Correct answer: A. Thio-neutralizing solution
After rinsing the waving lotion in a curl reforming service, a thio-neutralizing solution is applied. This solution contains an oxidizer that re-forms the disulfide bonds in their new curly configuration, permanently setting the curl.
Why the other options are wrong
- B. Leave-in conditioner is applied after the entire chemical process is complete and the hair has been neutralized and rinsed.
- C. An activator is typically mixed with the waving lotion in some perm types, not applied after rinsing.
- D. Pre-wrap lotion is applied before wrapping to protect the hair and equalize porosity.
Thio-Neutralizing Solution (Curl Reform)
An oxidizing agent (typically hydrogen peroxide) used in curl reforming and permanent waving services to stop the action of the waving lotion and rebuild the disulfide bonds in the hair.
- Re-hardens the hair into its new shape.
- Essential for the longevity of the curl.
- Applied after thoroughly rinsing the waving lotion.
Memory trick: After the wave, neutralize to save the curl's brave new pave.