I recently had the opportunity to visit a very relaxing and beautiful day spa during the middle-of-the-day break from the sessions at a Keystone meeting. I was having a very tranquil and restorative day, when I went in for my final treatment — a facial. The very chipper and cheerful esthetician began examining my skin and applying various creams, when I then heard her say something that nearly ruined my experience: she claimed that the topical treatment she was about to apply would, in her words, “cleanse my liver.”