I have a bunch of 100% cotton white t-shirts that are getting gray in color, and a few have tough stains that detergent and stain removers (Shout/Spray n’ Wash, etc.) have exhausted their efforts on. The problem is, all of them have iron-on (not screen printed) type graphics on them. If I bleach these shirts, will it discolor or damage the graphics?
It is an important distinction between iron-on and screened prints. These can vary greatly depending on how effective the transfer was done. The short answer regarding liquid bleach usage is… it depends. If the stains have been previously treated and dried, they may be difficult/impossible to remove.
So here’s how I would proceed: