Nano scale protective coating durably bonds to automotive glass. Repels rain, sleet, and snow on contact for improved visibility & driving safety. Reduces glare & reflections and protects glass against soil, pitting and fine scratches. Extend your driving safety with Glass Shield (Liquid) Glass Treatment/Rain Repellent. Our advanced formula creates a nanoscale protective coating that resists rain, sleet, and snow on contact, resulting in improved visibility. Enjoy reduced glare and reflections, as well as protection against soil, pitting, and fine scratches.