CarPro ECH2O Waterless Wash & Detail Spray is ultra-versatile and can be used on all exterior surfaces; it won’t stain or discolor rubber or plastic trim and looks amazing when used on chrome surfaces! CarPro ECH2O can even be used in direct sunlight. Directions for use: When using CarPro ECH2O as a quick detailer: Shake the product well and dilute per your needs (generally, 1:10 but can go up to 1:20). Spray CarPro ECH2O over a panel, spread for even coverage and wipe off completely. That’s it! When using CarPro ECH2O as a waterless wash: Shake the product well and dilute per your needs (generally, 1:5 but can go up to 1:10). Spray liberally across one entire panel. Using a clean and soft microfiber towel, wipe the panel in a back and forth motion, frequently flipping your towel to a clean side. Once again, spray CarPro ECH20 over entire panel and (using a new microfiber towel!) wipe product off completely. Continue this process around the whole care. Be sure you have plenty of soft microfiber towels on hand!