Fire retardant intumescent paint is a protective coating used to improve the fire resistance of materials such as steel, wood, and concrete. Under normal conditions, it looks like regular paint, but when exposed to high temperatures, it reacts by expanding and forming a thick, insulating char layer. This process, known as intumescence, helps protect the underlying surface from heat and flames. The insulating layer slows down heat transfer, allowing structural elements—especially steel—to maintain their strength for a longer time during a fire. This delay can be critical for safe evacuation and emergency response. Intumescent paints are widely used in buildings, industrial facilities, and infrastructure where fire safety is essential. They are available in different formulations, including water-based and solvent-based types, depending on the environment. Proper application and thickness are important to ensure effectiveness. Overall, these coatings play a key role in passive fire protection systems.