Fix-a-Scratch is the only product that features ChromaThermic Technology. Is a specially formulated colorant that is set into the damage with heat. When you push the colorant in to the bottom of the scratch and apply the buffer to it, the buffer will generate the heat needed to set the colorant into the grove. We aren’t taking off clear coat or putting in a substance that doesn’t blend into the paint on your car. We are depositing color and sealing it into the scratch. As long as you follow all manufactures directions, the Fix-a-Scratch product will stay the lifetime of the car.