The drying time for the patch depends on the type of repair kit you are using and the size of the tear. Generally, it takes around 24 hours for the patch to dry completely and be ready to use. However, some repair kits may dry faster if they are exposed to heat or air. To speed up the drying process, you can use a hairdryer on a low heat setting to dry the patch. Once the patch is dry, use sandpaper to smooth it out and ensure that it blends seamlessly with the rest of the seat.