Texas Class A Barber Written ExamChemical ServicesEasy
A client with resistant, coarse hair desires a permanent wave that will provide a strong, firm curl. Which type of permanent wave solution would be most effective for this hair type?
- ATrue acid perm
- BAcid-balanced perm
- CExothermic perm
- DAlkaline perm
Show answer & explanationAnswer & explanation
Correct answer: D. Alkaline perm
Alkaline perms, also known as cold perms, have a pH between 9.0 and 9.6, making them highly effective for resistant hair types due to their strong chemical action that softens and swells the hair.
Why the other options are wrong
- A. True acid perms have a lower pH (4.5-7.0) and are much weaker, requiring heat to process, and are not strong enough for resistant hair.
- B. Acid-balanced perms are gentler and suitable for delicate or color-treated hair, not resistant hair.
- C. Exothermic perms generate their own heat and are often alkaline, but the primary classification for resistant hair is the alkaline nature of the solution itself.
Alkaline Permanent Waves
Perms with a pH between 9.0 and 9.6 that use ammonium thioglycolate. They process at room temperature and are ideal for resistant or coarse hair.
- High pH (9.0-9.6)
- Process at room temperature (cold perms)
- Strong curl pattern, good for resistant hair
- Can cause more damage if not used correctly
Memory trick: Alkaline perms are like a strong ALKALI for resistant hair.