Hydrating agents are substances that help retain moisture in the skin or other materials. They work by attracting water from the environment or deeper layers of the skin, making them essential in skincare products. Common hydrating agents include glycerin, hyaluronic acid, and aloe vera, which are often used in lotions and creams to keep the skin soft and supple. In addition to skincare, hydrating agents are also used in food and pharmaceuticals. In food products, they can improve texture and shelf life, while in medications, they help maintain the stability of active ingredients. Overall, hydrating agents play a crucial role in various industries by enhancing moisture retention.