All of the following require the use of gloves EXCEPT

The correct answer is that a plain manicure does not require the use of gloves. In a plain manicure, the focus is primarily on nail shaping, buffing, and polishing, which typically does not involve exposure to harsh chemicals that could irritate the skin or require protective barriers. The procedure is generally safe and hygienic enough to be conducted without gloves unless there are specific health concerns on the part of the client or technician.

In contrast, procedures like applying virgin lightener, chemical relaxers, and eyebrow hair removal often involve the use of chemical substances or potential allergens that can be harmful to both the technician and the client, necessitating protective gloves to prevent skin irritation and ensure safety.