"Ninety percent of the time I have on zit cream," Miley Cyrus told us in a recent interview. A quick scan of her technicolor Instagram feed shows the other 10 percent spent in some stage of DIY beautification. From face masks to underarm bleaching, Miley is no stranger to home treatments, but her cryptic captions—"what's yo flava???"—leave us wondering: WTF is she using? A homemade hippie potion? Unicorn poop? We may never know. Regardless, no one does bathroom beauty better than Miley. Here, the unofficial rules.