How to tie dye an old white shirt!

Step 11 Now comes the hard part - waiting!

After you have completed putting the dye on the shirt, pop it into a zip lock bag and seal it up tight. Put the bag in a warm place and leave it for AT LEAST 24 HOURS! The dye needs this length of time to "prove" and allow the beautiful colours to really bond with the fabric. For you desperate "have-it-nows", you can unwrap after 8 hours - but..... You can also leave the shirt for as long as 36 hours if you are very patient. If you leave it much longer, I have found the colours go sort of fuzzy (don't know why). When you unwrap your shirt, wear rubber gloves and old clothes again. Don't make a mess!

Note: you have it nows should try the bleach tie method! http://www.instructables.com/id/Transforming-a-boring-old-black-t-shirt-using-blea/