Over the past few years, the obsession with face-slimming treatments through at-home microcurrent gadgets, gua sha, and in-office treatments (i.e., buccal-fat removal) has been at an all-time high.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Wanna know the best part about being a beauty editor? Getting to test pretty much every new device and ...