Yes, have gone on a raw juice cleanse, and also used CleanseU Herbal Detox Tonic. My experiences were tough. It lasted a couple of days, and now I am back to eating normally way too soon. My body is still super hungry after it all.
http://reviewclue.com.au/cleanseu-herbal-detox-tonic/ - product I've been using
I've never done a detox, but I have seen a friend lose a lot of weight after a cleanse. Not only has she shed kilos, but has so much more energy and is sleeping a lot better, so I am looking into the best cleanse for me.