Zaino Fusion is a light polish, and one that alot of us find to be the worst offering in the line. (it stained my rubber surrounds a light green) I would highly suggest moving to Menzerna, Optimum, Poorboys, or even XMT as polishes that work well. For best durability, when in doubt, always wipe down car between polish and Zaino for longest protection.
Menzerna Ceramiclear 066 or 085 & Zaino Z5Pro (nice combo)