Slugging is one of those beauty buzzwords that just a few short years ago would have meant nothing to most people. But, thanks to TikTok, we have seen trends like skincare slugging, hair slugging and, most recently, nail slugging all go viral. (Honestly, we’re surprised full body slugging isn’t a thing at this point.) For those who aren’t in the know, this skin-turned-hair and nail trend is all about locking moisture in.The skin edition involves applying a layer of an occlusive product, like Vaseline, to lock in moisture, while the hair version centres around leaving oil or conditioner on the hair for an extended period of time.