P.S.
Even though it seems like I'm using a lot of product, I've put 2 coats on my wife's Escape, 2 coats on my niece's Soul and about 6 coats on my Camaro, I still have a solid 1/2 bottle left of my first bottle and I even bought a 2nd bottle despite having so much left in the 1st bottle, because the APPEARANCE of the cars after using it was so phenomenal that even if the hydrophobics "only" hold up roughly 3 months, reapplication every 3 months is not a hardship or unreasonable to me.
BTW, what color is the car you are applying the 303 to? On my black Camaro, the haze is blatantly obvious, a bit less so on my wife's strawberry - red Escape and my niece's red Soul. If you have a lighter colored car, the haze may not be as obvious to you. On the Camaro, the haze is clearly white, even though the removal towels (which are bright yellow) turn dingy with black 'staining' upon removing the 303.