I just started doing this. its not only for detox, it really helps with sore muscles from hard workouts. get out of the tub slowly; you actually get a little light-headed.DIY: Epsom salt detox bath.
Epsom Salt Detox Bath- Made and used it. Bath is extremely hot. Important to get out of it slowly and let your body re-climate. I didn't and felt light headed and dizzy. It really did the trick after that though.