Title: Perform predisposition test.
Course: Master Barber II (Three-year Program) (19002-II) > Section: Performing a Permanent Wave

Performance should include a patch test on skin to determine sensitivity to chemicals.

Process/Skill Questions:

- How should a patch test be performed?
- What product should be used for the test?
- When can the patch test results be examined?
- Where should patch test results be recorded?