Makeup setting spray is a cosmetic product designed to help keep makeup in place throughout the day. It is typically applied after completing your makeup routine and works by forming a protective layer over the makeup. This helps to prevent smudging, fading, and wear caused by factors like heat, humidity, and movement. Most setting sprays come in a liquid form and are dispensed through a spray nozzle for easy application. They can be formulated with various ingredients to provide additional benefits, such as hydration or oil control, catering to different skin types and preferences.