There are several ways you can remove window tinting. This video will show you how you can use a steamer and razor blade to peel and scrape of the tinting of a back window in a car. The steam heater will get the tint coat to separate from the glass. Depending on how old and the quality of the tint will determine how easy this process is. Hopefully you have a good tint job which will allow for easier removal. You can use Windex to finish removing any residue left when you are done. You may need to vacuum up some following scrapings. This process may take up to an hour. Why would you can to remove the tint you ask? Well it is illegal to have a too dark of tinting with the laws changing from state to state. So check the regulation for your state.