The Master Cleanse consists of an ease-in period followed by The Lemonade Diet, then an ease-out phase. The Master Cleanse website says the ease-in phase is not as significant as the ease-out period in which dieters come off the diet. The Lemonade Diet typically lasts 10 to 14 days. During this period, dieters drink only a specific lemonade. The ease-out period that follows this liquid phase re-introduces solid foods into the diet, with a focus on healthy eating habits.