I applied two coats when by bottle came in a couple of weeks ago. I did a huge detail on the same car this past Saturday. Ater washing twice with EF's Powerwash and claying the car, the WG was still beading strong and felt slick. It didn't come off untill I polished with P21S GEPC and SSR1. That is after only two weeks. Keep in mind though, I'm a carnuba only guy (used to be untill WG). Pinnacle Souveran and P21S wax will come off with one washing with Eiman Fabrik's Powerwash so I'm pretty impressed with durability.