Has got to be the best car product ever made!
Freakin amazing.
I could seriously drive in the rain without turning my wipers on if need be, quite a product.
Anyone have a good idea how long an application usually lasts?

 

It depends directly on how much rain or wiper fluid it's exposed to. I always like it until it starts wearing off, then it starts making the the blades skip and make noise.

 

RainX sux. I like to just use invisible glass then I seal with Nxt wax or Zaino for the water repellant/beading action. I don't have to use my wipers as long as I'm moving. And no squeeking streaking skipping wipers after a few weeks like with Rainx.

 

+1 However, I keep a wipe in my glove compartment just in case the wipers don't work!