I made some out of wool yarn and I think it helps. I have a dryer that bunches up the clothes so these balls help keep them unpunched. I don't have soft water so I think these help. It's not like I don't still have wrinkles but I just think it helps a little. It was on this site that someone told how to felt the yarn and make these balls. I need to make some more as mine are slowly coming apart. It's been several years.