Will dermaplaning make hair grow back thicker?

Cutting hair at the surface does not make it grow thicker, although the blunt tip may feel different as it grows. Suitability still depends on the current skin condition, so the hair-growth myth and the treatment decision are separate questions.

Dermaplaning does not change how thick the hair grows

Even so, dermaplaning does not suit every skin condition. I would still assess current irritation or breakouts before discussing the procedure.