I heard about body wraps that recommend that you use seran wrap to keep the body wrap in place. This company is popular. However,seran/cling wrap has PVC in it which can lead to health problems and that toxic plastic substances can enter your skin. Again the cling wrap is only used to keep actual product(that detoxifies your body) in place and not by itself but it still touches the skin. So miy question is if the seran wrap is safe to use. So many reps use that method so I am confused.