Those of us who love to sink into a tub of Calistoga mud realize that plenty of people think the very idea is gross. My friend Cheryl and I don't care. At the end of The Works at Dr. Wilkinson's or ...

The lighting in the treatment room is muted and soothing. Candles flicker on a shelf, rose-petals are scattered across the ­marble floor, and the air smells of geranium aromatherapy oil. I’m in London ...