The UV protection and water beading should last for several months. We can't give a definitive answer on the shine because that really depends on your washing regimen and climate, but it should last a month.
This product is meant to be applied as many times as you'd like as it is very quick to apply. After every car wash, or in between car washes.
Or you can skip it and do it after every other car wash. Really up to you.
But know this, the newly developed polymer additives enable this product to outlast every other spray wax/sealant you've ever tried.
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!