I believe I've seen a topic about this, but I can't seem to find it. I dip dyed a holster, my first original, in Tandy's professional black water stain. I t has been drying for about 3 hours now, and it has what looks like a white frost covering. It was in the stain for about 30 seconds. I put the dye in a 1 gallon zip lock bag, then dropped the holster in, and sloshed it around until I was sure it had all been covered. Removed it from the stain, wiped of the excess, and set it aside to dry. Now the white covering. Doesn't seem to wipe/rub off, and can't scrape it off with my finger nail. What did I do wrong?