If the cause is overplucking, revive sparse areas with a brow serum.
Overplucking is a common grooming mistake, but it’s also one of the biggest reasons for hair loss in the eyebrows. “Eventually, the plucked hair grows back in, but after a while, the growth rate shortens a bit with each cycle,” says New York hair restoration surgeon Carols Wesley, MD. “The areas that have been overplucked come back shorter and thinner, leading to long-term thinning.” Try a brow serum like twenty/twenty beauty Get Growing Lash & Brow Serum ($36), which contains castor, coconut and argan oils to help support the growth of thicker brows and includes disposable applicators for a more hygienic routine.