The UV protection and water beading should last for several months. We can't give a definitive answer because there is no exact science, and it all depends on a number of factors such as the climate and your washing regiment.
But if you want to bring the shine and longevity up another notch you can use our Liquid Wax as a first layer (lasts from 6-12 months), and the Hybrid Wax over top.
Furthermore, we are so confident in every product we sell that they are all backed with our Zero Risk Policy
Use it once, or use the entire bottle!