Paint lifting or bubbling is probably caused from using incompatible products, or a contamination on the surface that you applied the paint to. Make sure that you use the primer, paint and clear coat from your ScratchesHappen touch up paint kit. Make sure that you degrease the surface first with dish detergent and then rinse with water and dry. Make sure there is no moisture on the paint (such as early morning condensation). Don’t paint your coats too heavy, because the paint works better as multiple thinner coats.