fabric bleeds.. absolutely !!! small stuff, I use .. OK.. will get a lot of flack from this.. but really does test the fabric.
Dawn dish soap in a 6 cup glass measuring cup under the facet.. in hot water..
really does test the fabric and can see right away if it will be a problem.. some just washes out.. and clear water then is what comes after the soap is gone..
I don't want to chance some fabric running color.. too much work !
Larger sizes, I wash normally, and dry normally.