Agree with all above. Must wait a MINIMUM of 24 hours, prefereable several days. I use Champ, which is a VERY strong setting solution, but works on almost any decal first time. It will definitely turn the future white. Even with aging the Future, you may notice that the Future has lost its gloss where the setting solution has hit the Future. I have decalled a lot of models with Future, and fortunately, recoating with Future after the setting solution as dried fixes it right up. I personally use Future as my "setting solution" on all decals, applying a coat right on top of my just applied decal. It pulls the decal right down to the Future undersurface. Only in rare instances do I use setting solution to snuggle a problem decal down, then, only put it right on the decal after pin pricking the decal .