Originally Posted by Terryl
So if I DON'T put my quilt in the freezer, and don't put them outside when it's 14* will the ink stay disappeared?
Yes....so don't take it to the Antarctic or to Death Valley in summer and it will be OK, if the results of the tests are true. So, once it disappears with the ironing, it won't reappear unless it gets below 14 deg F.
Actually, all the marking pens that disappear with air or water are probably "still there", you just can't see it any more.