A hotfix rhinestone applicator is a tool that is used to apply hotfix rhinestones to fabric or other materials. Hotfix rhinestones are decorative gems that are attached to fabric using heat, rather than being sewn or glued on. The hotfix rhinestone applicator applies heat and pressure to the rhinestone, causing it to adhere to the material. This allows you to easily and quickly add sparkly embellishments to clothing, accessories, and other items. Hotfix rhinestone applicators are typically hand-held tools that have a heated tip that you press against the rhinestone to activate the adhesive on the back of the gem. Some applicators also have a built-in dispenser that allows you to easily pick up and apply the rhinestones.