How To Bleach Black Shirts For Sublimation. Wash your dark shirts in cold water and dry them in the dryer for a few minutes before sublimating to make the colors last longer. There are lots of videos on different ways to bleach before and after adding your print.

Steps to bleach shirts for sublimation printing: This video is about diy bleach shirt tutorialmaterials used:11×17 sublimation paper: I like to do the back of the shirt as well as the front.