I received a Bicycle Invisible deck at the same time as this roughing balm, and despite very light
handling, about six of the R&S pairs would not stay together when fanning. The Neo V2 came in very
handy for a touch-up, to make the Invis deck useful. The negative, for which I subtract a star, was
that using it with moderate pressure in a stripe down the center of the touching backs of each
matched pair did not have any effect, nor did doing so all over the cards. Pressing harder also had
no effect. Rather, I had to press EXTREMELY hard and go over each card multiple times in a larger
area than I had expected before they would reliably stay together when fanning. It was successful at
that point, but required much more pressure than I had expected or would prefer. Thus, the
formulation seems to me to be a bit too hard, at least for the one I received, and it was less
convenient to use than I'd expected. I'd prefer that it transfer to the card with less pressure. But
it does work well, in the end.