UV reactive materials are substances that change their appearance when exposed to ultraviolet (UV) light. These materials can glow, change color, or become transparent under UV light, making them popular in various applications, including art, safety gear, and decorative items. These materials often contain special dyes or pigments that react to UV radiation. When the UV light is removed, they typically return to their original state. This property is useful for creating visual effects in clothing, paint, and accessories, as well as for enhancing safety by making items more visible in low-light conditions.