A product necessary for perfect preparation of the windshield before the application of hydrophobic coatings from the Glaco series as well as others! It removes greasy, unwanted films, and other products previously applied on the glass by sterilizing it. Glass Compound Z formula comprises tiny, hard and soft abrasive particles that gradually penetrate and remove the above impurities. A special application pad is included in the package. Directions for use: 1. Prepare the glass surfaces by washing them thoroughly with pH neutral shampoo and drying 2. Shake the bottle well and apply a small amount of liquid onto the included sponge 3. Polish the glass with the sponge with cross movements 4. Rinse with water after the process is completed