PRESTO! Pro Scratch & Scuff pen & 2 oz Refill PRO Treat Clear Coat Scratches & Scuffs Quickly Permanently shine automotive plastic with ease. works by using the UV in sunlight to activate the hardener/catalyst which is premixed with the clear coat resins This efficient felt tip applicator is filled with enough PRESTO! PRO for several hundred scratches. No Mixing & No Mess Works on ALL Colors