Park the car in a shaded area
Lower the window slightly
Heat the tint with a hair dryer or heat gun
Peel up one corner of the tint with a razor blade or fingernail
Pull the tint off slowly at a low angle
Spray adhesive remover or soapy water on leftover glue
Scrape off residue with a plastic scraper or razor blade
Clean the glass with glass cleaner
Remove any remaining adhesive with rubbing alcohol or ammonia-based cleaner
Wipe the window dry with a microfiber cloth
Repeat for all windows
Wear gloves and eye protection
Avoid damaging rear defroster lines and window seals