Henna is a hair coloring that causes a permanent change in color until the hair grows out. Henna is regulated as both a drug and a cosmetic because the change is permanent.

Question

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Henna is considered a temporary hair dye because it coats the hair shaft without chemically altering the hair. It is regulated as a cosmetic, not a drug, because it does not cause a permanent change.

Henna Is a Hair Coloring That Causes a Permanent Change