After three or more washes you can be confident that it will not ruin your other clothing. Flip your tie dye project over if necessary and apply dye to the other half of the project. Bleach Tie Dye A K A Reverse Tie Dye Chaotically Yours Place project in a plastic bag and leave overnight. . 29You should give your dyes plenty of time to react with the fiber in the presence of soda ash from the presoak. Helpful Hints To Make Your Tie-Dye Shirt Last A Long Time. This video tutorial demonstrates the process of setting your Dye into the Fabric. - First lay your shirt out flat. Then scrunch smaller sections of the fabric together randomly. 10Let the Dye Marinate Dont wash your shirt for at least 24 hours after dying it. What you dye is TOTALLY up to you. The basic method to do Tie dye. Grab your tie dye project and put it into your plastic Ziploc bag and let it sit overnight. Do not hang it up t...