Window tinting definitely keeps vehicle interiors cooler. The problem with car windows (the windshield in particular) is that they are designed to give you a wide view outside, but this also lets massive amounts of solar energy inside, heating your car to uncomfortable temperatures.

Yes, you can wash your car after tinting your windows. This is because window tint is applied to the inside of the windows, not the exterior. A simple car wash on the outside can be applied immediately after a window tint, only if the seal around each window is secure.

It's common to see small bubbles under freshly-installed tint. Normally, these bubbles should go away within a couple of weeks and should be very small. They may take longer to go away in cold weather and vanish faster in heat.

Yes, along with distracting bubbles, poorly installed, low-quality window tint films can crack and peel over time, reducing your car's appearance and your visibility while driving. To avoid ugly, embarrassing window tints that bubble and peel, don't opt for the cheapest option.