White areas are a bit risky. In the printing process color is printed onto the textile, but the textile can only absorb a portion of that ink. During steaming the textile is exposed to hot water steam which locks most of the ink into the textile fibers, but what is left over is loosened from where it was printed and may settle in another area.
This effect is usually minimal and disapears on any printed area, but on white it's another story. For this reason designs like a brightly-colored logo on a large white background are a gamble and you are likely to get better results from screen printing or using a transfer.
Last update on 2016-03-09 by Ellie Mutchler.