Hair ServicesQuestion 346 of 484
What is the purpose of a strand test performed on a small section of hair before a full color service?
a.To preview color result, processing time, and condition of the hair after the chemical
b.To set the curl pattern for a permanent wave
c.To clean buildup from the hair before chemical service
d.To check the client for allergic reaction to PPD
Explanation
A strand (preliminary) test is a small swatch of hair processed with the actual color formula to preview the final shade, gauge required processing time, and confirm the hair's condition will tolerate the service. The patch test, by contrast, checks for allergic reaction on the skin, not in the hair.
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