Dr. Greens Chalice Cleaner is a highly effective earth and family safe product for cleaning water pipes and other smoking accessories. Dr. Greens can be used on acrylic, etch glass, ceramic, or any other surfaces without worry that it will remove any paint from those surfaces. Dr. Greens will clean even the most difficult buildup of tar, grease, or other deposits. Dr. Greens also leaves no after taste in your chalice and this is one of its finest selling points. Sold as a 16 oz bottle of concentrate solution. Use as directed.