Hot glue is a type of adhesive that is applied in a molten state and solidifies upon cooling. It is commonly used in crafting, woodworking, and various DIY projects. Hot glue is dispensed using a hot glue gun, which heats the glue sticks until they melt, allowing for easy application to surfaces. Once applied, hot glue forms a strong bond that can adhere to a variety of materials, including paper, fabric, plastic, and wood. It is favored for its quick setting time and versatility, making it a popular choice for both hobbyists and professionals in many creative fields.