Hood deflectors are installed on the leading edge of a car's hood to protect it from rocks, debris, and insects. They also help to deflect wind and rain, reducing the amount of dirt and grime that accumulates on the windshield. Some hood deflectors are made of acrylic and are designed to be scratch-resistant and durable. When considering a hood deflector, it is important to choose one that is specifically designed for your vehicle make and model to ensure a proper fit.