Dr. Fixit Krystalline is a cementitious, brush applied, waterproofing treatment for concrete. When it is mixed with water & applied to concrete, it penetrates into the concrete mass protecting against the passage of water. Dr. Fixit Krystalline reacts chemically to form billions of needles like crystals which block the pores, voids & micro cracks in concrete. Pre saturation & subsequent re-wetting of the surface will cause deeper diffusion of the organic chemicals & formation of crystals at greater depth.