Florida Cosmetology Licensing ExamChemical ServicesMedium
A client with fine, delicate hair requests a permanent wave. The cosmetologist notes the client's hair has been previously highlighted. To prevent over-processing and damage, which type of permanent waving solution would be most appropriate?
- AAcid-balanced perm
- BAlkaline (cold) perm
- CThio-free perm
- DExothermic perm
Show answer & explanationAnswer & explanation
Correct answer: A. Acid-balanced perm
Acid-balanced perms are gentler and have a lower pH, making them suitable for delicate, color-treated, or previously highlighted hair, minimizing the risk of damage.
Why the other options are wrong
- B. Alkaline perms are strong and can cause damage to delicate or previously highlighted hair.
- C. Thio-free perms still contain a reducing agent that can be too harsh for delicate hair if not carefully selected and applied.
- D. Exothermic perms generate their own heat and can be too strong for delicate, highlighted hair.
Acid-Balanced Perms
Permanent waving solutions with a pH between 4.5 and 7.0, typically requiring heat to process. They are gentler on the hair.
- Lower pH (4.5-7.0)
- Requires external heat or self-heating (exothermic)
- Ideal for delicate, color-treated, or damaged hair
- Processes more slowly and produces softer curls
Memory trick: Gentle waves for delicate strands need an 'Acid' touch.