Exactly paint and clear coat take a long time to dry since they have lowered VOC's and therfore take longer to outgas. Look at the paperwork given to you by the bodyshop. It will say wait seven days to wash the car and 4-6 weeks before applying any wax or sealers. If you don't wait the clear may haze, bubble, or peel and you will void the warranty. It may take longer since its colder outside but six weeks is enough time.