Fabric stiffeners are substances used to give fabric a firmer structure and shape. They are commonly used in crafting, sewing, and home decor projects to enhance the appearance of items like tablecloths, costumes, and craft projects. These stiffeners can be applied in liquid form or as sprays, allowing for easy application on various types of fabric. There are different types of fabric stiffeners, including starch, gel, and spray-on options. Each type offers varying levels of stiffness and flexibility, depending on the desired outcome. Using fabric stiffeners can help maintain the shape of items, making them look more polished and professional.