1) Apply on a clean and cool surface away from the direct sunlight 2) Do not use the product on heated surface or under direct sun. 3) Do not leave the product on surface overnight or for extended periods. 4) Product is suitable only for 2K (crosslinking polymer) type paint system used on all OEM modern cars. In case of doubt first test the product on a small insignificant portion of the automobile. 5) Do not apply on plastic, vinyl or rubber parts.