Our tire paint pens contain polystyrene copolymer, C12-15 alcohol. It can add bright colors to the car. The way to use it is very simple: 1. Please shake the pen up and down for more than ten seconds, then open the lid and press the pen vertically against the paper until the water flows out. 2. After the paint has permeated the nib, carefully apply it to the text or pattern on the tire that needs to be decorated. When painting, apply in multiple layers, with each layer spaced 3-5 minutes apart. 3. The effect is shown after 5 minutes to give the car tires another feeling. And the tire primary color, flat, not obvious.