"RezBlock Concentrate by 420 Science - 15ml - Pipe Glass Cleaner ";

After two strong years with RezBlock, we started looking for ways to make it even better. We began with two goals in mind: let's find a way to give people more RezBlock for their buck and, if possible, let's make it even harder for resin to build up. The solution to both of these objectives came in the form of a concentrated formula. - - - This bottle contains up to 60 uses (compared to 8 uses with original RezBlock). Just add a few drops in your water pipe to keep resin from building up. - - - Best Practices - We find that serious enthusiasts change their water daily. Combined with a few drops of RezBlock, this is the best way to maintain a clean piece and get that pure taste we all love. - - - Cleaning After using RezBlock - Rinsing your piece with water should be enough to keep it mostly clean. Of course, you'll still need to clean your bowl and any parts of your pipe where the water doesn't touch. - - -Ingredients - Fruit extracts, vegetable glycerin, purified water, citric acid