Florida Cosmetology Licensing ExamChemical ServicesHard
Before applying any chemical relaxer, a cosmetologist must perform a strand test. What is the primary purpose of this test regarding the relaxer's processing time?
- ATo precisely gauge how long the relaxer takes to achieve the desired straightness.
- BTo assess the hair's porosity and elasticity.
- CTo check for any existing hair damage or scalp abrasions.
- DTo determine the client's sensitivity to the relaxer product.
Show answer & explanationAnswer & explanation
Correct answer: A. To precisely gauge how long the relaxer takes to achieve the desired straightness.
The strand test for chemical relaxers is specifically performed to determine the optimal processing time required to achieve the desired degree of straightness without over-processing or damaging the hair. This is crucial as processing times vary greatly depending on hair type and condition.
Why the other options are wrong
- B. Porosity and elasticity are assessed during the hair analysis, usually before a strand test, to inform product selection.
- C. Existing damage or scalp abrasions are identified during the scalp and hair analysis prior to any chemical service.
- D. Client sensitivity is checked with a patch test (predisposition test), not a strand test.
Relaxer Strand Test
A preliminary test performed on a small, inconspicuous section of hair to determine the hair's reaction to the relaxer product and to accurately gauge the processing time needed to achieve the desired straightness.
- Crucial for preventing over-processing.
- Determines optimal processing time.
- Assesses the hair's ability to withstand the chemical.
- Performed on a representative section of hair.
Memory trick: Strand Test: Time to See the Straightness