A hotfix rhinestone is a type of decorative gemstone that is typically used in clothing, accessories, and other fashion items. It is called a hotfix rhinestone because it is attached to fabric or other materials using heat, rather than being sewn or glued on. Hotfix rhinestones are popular because they are easy to apply and can provide a sparkling, eye-catching effect. They are often used to add bling to clothing, hats, bags, and other items. To apply a hotfix rhinestone, you typically use a hotfix applicator tool, which applies heat and pressure to the rhinestone, causing it to adhere to the material. Once applied, hotfix rhinestones are durable and long-lasting.