Water-repellent coatings are specialized materials designed to prevent water from adhering to surfaces. These coatings create a barrier that causes water to bead up and roll off, rather than soaking into the material. They are commonly used on various surfaces, including fabrics, glass, and metals, to enhance durability and maintain cleanliness. These coatings work through a process called hydrophobicity, which means they repel water molecules. Many water-repellent coatings are made from substances like silicone or fluoropolymers, which provide long-lasting protection. Applications range from outdoor gear to automotive finishes, helping to protect items from moisture damage and stains.