The ProTeam Liquid UV Shield is a unique pool stabilizer, that does not perform the same as regular cyanuric acid granular products. Chlorine is eliminated from the water by sunlight, and the Liquid UV Shield acts as a barrier to help reduce chlorine loss so that your chlorine levels last longer. Liquid UV Shield is already stabilized so it instantly becomes part of the water, and does not require any waiting. Protect your chlorine without throwing off your pool’s chemistry.