Can a crystal change your face?

The answer, at first, seems like it should be a clear and not-so-subtly condescending “Uh, no.” But the lasting power and unrelenting popularity of jade rollers, gua sha stones, and all manner of crystal-carved facial massagers—which originated centuries ago as part of traditional Chinese medicine and are currently experiencing something of a renaissance—are enough to make even the most skeptical injectable enthusiasts curious.