Our car scratch repair pens contain UV curing agent, acrylic resin, palmitic acid. It can form a transparent layer on the surface of the car, filling in scratches while keeping the surface crack-free. The way to use it is very simple: first thoroughly shake the pen, press the tip down until there is water out, and then apply it directly to the part that needs to be repaired, and let it dry naturally. After use, it can perfectly repair car scratches, and the repaired paint will not be affected by water, which can make the repaired surface clean as new.。