Simply add it to tap water or mineral water to create hydrogen-rich water. It's reusable, eco-friendly, and economical. Hydrogen water has antioxidant properties and removes active oxygen from the body. It increases magnesium, which is often lacking in regular mineral water, and magnesium plays an important role in ensuring that all minerals function properly. As shown in the photo, it comes with instructions. I bought it new, and only needed one, so I'm selling the remaining 5 Mag Sticks and a set of 4 citric acid packets. All items are new and unopened. Type...Other