For years, at-home tools based on in-office treatments have been slow to sell. Then the pandemic made them one of beauty’s fastest growing categories. The rising popularity of in-office cosmetics treatments, from red light to microcurrent, have inspired companies to create at-home devices since the early 2000s, but awareness and penetration have lagged. The pandemic brought seismic growth to the category, which is now expanding at four times the rate of skincare overall — providing