For My Crafty Sisters...

Okay. Jacob brought home a tie-dyed shirt that he made at camp. I haven't done a thing with it because it's freaking me out a little. Jacob swears that they said to run it in apple juice and vinegar before washing. A lot of what I've read says you should just use vinegar. Some sites say just wash the thing in cold water, then in hot water.

HELP!!!! I have no idea what to do and he'd like to wear the thing before he grows out of it!!! Any suggestions?