Active hydrogen bonds with active oxygen to form harmless water molecules. Water that contains large amounts of active hydrogen is known as ionized water.

As we saw with active oxygen, ordinary hydrogen consists of a pair bond between two hydrogen atoms, represented in chemical symbols as H2. While active hydrogen consists of a single unbonded hydrogen atom, these single hydrogen atoms have extremely powerful capabilities in reducing, or anti-oxidizing which means they can chemically reduce other substances. When active hydrogen comes in contact with excess active oxygen in the body, it immediately bonds with the active oxygen to form water. Thus it removes active oxygen from the body and it does so harmlessly with no side effects. Active hydrogen reacts strongly with many substances, but particularly with oxygen. There are other materials beside ionized water that has a "scavenger" effect to remove excess active oxygen. The most prominent of these is super oxide dismutase or SOD. However both the quantity and effectiveness of SOD in the body diminishes with age. This means that we need to think about supplementing it, and the ideal supplement is active hydrogen.