ClearBlue is an extremely effective algaecide and also assists in controlling bacteria and viruses. This allows the chlorine in the water to work more effectively. ClearBlue releases microscopic mineral ions into the water which gives it a soft, comfortable feel. You won’t get the drying, itching and fading effect that can happen in pools with a higher chlorine concentration. The silver and zinc minerals in the water are also great for your skin. You’ll feel the difference right away.