If I could only stop my own aging so I could actually find out if any of the skin care regimes I have been following throughout the years have been at all helpful in staving off wrinkles and/or gravity. The incessant movement into the future is preventing any perspective to judge the efficacy of my long term use of Tretinoin, microdermabrasion, serums and masks. What would my skin look like without all this crap– er, I mean, intervention? That being said, I welcome the Gua Sha to my tool box.