DW and I just bought some black skinnies at Gap and labeling clearly states not to wash with anything on the first run-through due to dye transfer issues...but in a FL, hmm, what to do? Ahah! Have a box of these left over from trip to Florida and had some other darks to wash. Instead of one sheet used two and absolutely NO transfer occurred, and BOY these sheets were dark grey (they start out white). I think we paid about $3.50 for a box of 24. In Florida we used them in a TL and was a real time-saver. No ingredients listed anywhere on the box, perhaps someone here @ AW can inform us what makes these work so well?