Funny . . . I had the wrap right before my wedding (many moons ago.) It was part of a spa package gift from my shower. Anyhoo, it took quite a while to wrap me up & after I weighed in six pounds lighter. My waist measured 1 1/2 inches smaller. I don't know if she measured it at a different spot or if it really had "shrinkage."
The separate wrap area of the spa had these little signs up that looked like fake diplomas. Said things like "Certified Snake Oil Salesman." I thought either that was a joke or they just didn't want to really be responsible if there weren't any real effects from the wrap!