before performing a coloring service with an ...
before performing a coloring service with an aniline derivative product, the client must have a(n) _____.\npreliminary test\napplication method\npatch test\ninsurance record
Answer
# Brief Explanations:
Aniline - derivative products in coloring services can cause allergic reactions. A patch test is done to check for such sensitivities before the full - service application.
# Answer:
C. patch test