Exotic Punch & Lemon/Lime are currently unavailable but should be back in stock in September. Fast acting formula will flush toxins and unwanted metabolites from your bladder allowing you to provide a clean urine sample within an hour. Fortified with vitamins and herbal ingredients, Ultra Mask starts working in just one hour. It is so easy to use, just shake and drink. Refill with water 15 minutes later and drink. Over the next 45 minutes, urinate 2-3 times and your toxins will be completely masked for the next four hours.