The only time I had an issue with Zaino - it was my fault. I had used
Menzerna 106 and didn't do a good wipe down with alcohol. It looked good for about 2 weeks then there was NO shine or beading. I've since learned that proper Zaino prep is essential for durability. If you're going to try it, get ZAIO and let that be your base to add Z2 or Z5.