Florida Cosmetology Licensing ExamChemical ServicesEasy
A client with coarse, resistant hair desires a permanent wave that will provide a strong, firm curl. Which type of perm solution would be most appropriate for this hair type?
- AExothermic permanent wave
- BAlkaline permanent wave
- CAcid permanent wave
- DLow pH permanent wave
Show answer & explanationAnswer & explanation
Correct answer: B. Alkaline permanent wave
Alkaline permanent waves, also known as cold waves, are formulated with a strong alkaline agent, typically ammonium thioglycolate, which is effective in processing coarse, resistant hair to achieve a firm curl.
Why the other options are wrong
- A. Exothermic refers to the heat generated by the solution, not its chemical composition or suitability for hair type.
- C. Acid waves are generally for porous or delicate hair, not coarse and resistant.
- D. Low pH waves are typically for softer curls on damaged or delicate hair.
Alkaline Permanent Waves
Permanent waves with a high pH (typically 9.0-9.6) that use ammonium thioglycolate to break disulfide bonds without heat. Ideal for strong curl on coarse, resistant hair.
- High pH (9.0-9.6)
- Ammonium thioglycolate is the reducing agent
- No external heat required
- Creates strong, firm curls
- Suitable for coarse, resistant, or normal hair
Memory trick: Always Make a Strong Curl with Alkaline.