Breakdown of Avant le dîner, elle remet un peu de vernis et range le sèche-cheveux dans le tiroir.
Questions & Answers about Avant le dîner, elle remet un peu de vernis et range le sèche-cheveux dans le tiroir.
Remet is from remettre, which literally means to put back or to put again. In this sentence, it most naturally means to reapply or to put on again.
So elle remet un peu de vernis suggests that she is applying a little more nail polish, not putting it somewhere physically.
This is different from mettre, which just means to put or to put on in a more basic sense.