I find a microfibre cloth misted with quick detailer spray can help buff off the collinite. The other thing is you don't need to leave it on long before buffing off. I once made the mistake of leaving it on for thirty minutes during the winter time and it was a pig to remove. During the summer, even five minutes can be horrendous.
If you're really struggling, reapply the collinite - the solvents should help dissolve/remove what has dried.