
Originally Posted by
red_one
Bro, it depends on the durability of the products.
NanoFil/NanoSil are supposed to hide swirls and blemishes away. If those defects are becoming visible again, then it is time to re-apply NanoFil/NanoSil. For carnauba wax, once you notice less or no water beading, you can re-apply wax.
Tip: Before applying wax, sprinkle or spray water on car hood. Observe and remember the water beading effect. Take a photo if you want to. Repeat this after applying wax. Now, you know what water beading looks like with and without wax. After your next car wash, repeat this step to test if there is still enough wax on the car.