works well, but unneccesary for most
I'm a huge fan of this stuff honestly, and have been using it for several years now.  Thing is, it's not really necessary, if you are regularly changing out the water in your waterpipe you can basically acheive similar results.  However, if you are someone who only changes out water ever few days, this will help immensly.  I tend to change my water a cpl times a day, at minimum daily.  So outside of making the cleaning process take a little less time for me these days this is an expensive luxury, but again, if you are going a few days between water changes, this is a game changer.
Rating: 4 stars