I bought the three-in-one brand and used it on my longest wig, and my Miku twintails. The first one, that is made from a ratty, coarse fiber, didn't get much prettier. I thought maybe it was because I didn't use enough, but when I used more, it seemed to get just more ratty looking. I hope the spray will at least help me untangle it after wearing. The tails on the other hand are a beautiful fiber, and they got even more easily manageable, and there are less flyaway hairs. Thank you for letting us know about this!
Rei the Guntecher (PSU)
Link from Majora's Mask