Beauty tools have gone fully sci-fi. From acne-fighting light therapy to sculpting microcurrent devices, at-home skincare tools keep improving, and high-frequency wands are no exception. A long-standing aesthetician staple, the inner workings of these zit-zapping and line-smoothing wands glow with flickers of orange, blue, or purple gas and are quickly becoming an at-home favorite for enhancing skincare routines.