Exfoliation is a useful tool for addressing many signs of aging skin, including fine lines, dullness, and yes, age spots. However, exfoliation is all about balance. “You want to exfoliate just enough to increase cell turnover and reveal fresh new skin, but be sure to not scratch or damage your skin by overusing these devices or products,” says Ife Rodney, M.D., a board-certified dermatologist and founder of Eternal Dermatology, about exfoliation frequency.