Hydrophilic materials are substances that have a strong affinity for water. They can easily absorb or interact with water molecules due to their polar nature. Common examples include cotton, cellulose, and certain types of polymers. These materials are often used in applications where moisture retention or water interaction is essential, such as in medical dressings or hydrogels. In contrast to hydrophobic materials, which repel water, hydrophilic materials can enhance the performance of products by promoting moisture management. Their ability to attract water makes them useful in various fields, including textiles, biotechnology, and environmental science.