2-day detox?! Drink 1 gallon per day?! Detox diet claims are becoming more radical, both lacking evidence to support claims and a universal definition of what it means to "detox". The body is already great at self cleansing through the liver, kidneys, digestive system, skin lungs, lymphatic system, and reparatory system. A true detox involves providing the proper environment for these organs to do their job, which is a daily task, not a 48 hour fix.