ITEKT Windshield hydrophobic liquid glass protectant ensures water, oil, dirt, snow, ice and insects do not cling to glass. Improves shatter and scratch resistance by 20%. This item includes 24 individual application bottles of Liquid Glass Protection. You will still need either iTEKT Windshield Degreaser or iTEKT Cerium Polishing Powder to properly prepare the windshield before applying the Liquid Glass Protection.