Hydrophobic materials are substances that repel water, meaning they do not easily absorb moisture. This property is due to their molecular structure, which creates a barrier that prevents water molecules from adhering to their surfaces. Common examples of hydrophobic materials include teflon, wax, and certain types of plastics. These materials are used in various applications, such as waterproof clothing, non-stick cookware, and protective coatings. Their ability to resist water can help prevent corrosion, reduce friction, and improve durability in products exposed to moisture. Hydrophobic surfaces are also important in fields like biotechnology and engineering.