My friend suggested this product, does not seem to be very effective, he said they must have changed the formula to be more eco. He said to not let this drip on your paint or it would eat the paint. Have a paper towel ready to catch the excess and you don`t have to go to the edge of the glass. This will reduce the chance of dripping on your paint. They also has an expiration date, so check that when you get them and use them before they expire.

I started using this in the early 2000's when it was sold as an STP product called Vision Blade. PPG soon after began selling it as Aquapel, primarily through auto glass replacement outlets and later through normal retail distribution.
I haven't found anything better in the last 20 years, although I recently applied a ceramic coating to a new vehicle windshield and am evaluating it for performance and durability.
Some application tips:
1) Clean your windshield thoroughly and then scrub it with grade 0000 steel wool to remove stubborn contaminants. Make sure to use 0000 to prevent scratching the glass. Wipe the dust off with a slightly damp cloth and let dry before proceeding.
2) Apply the liquid to the entire (dry) windshield, starting with the driver side. Aquapel binds with the glass almost instantly - as soon as it beads up. There is no 'thick' vs 'thin' - just swipe back-and-forth, then up-and-down to make sure the surface is fully covered.
3) Do not apply in direct sunlight or to a hot surface. If the liquid dries, it is a bear to remove.
4) I always have three paper towels, one slightly damp microfiber towel and one dry microfiber towel ready before I begin the application. After applying, wipe the entire windshield off with the first paper towel, follow with the second and move on to the third. By the third, it should be somewhat difficult to wipe the remaining residue off and the glass should look clear. As a finishing touch, wipe with the damp m/f and the dry m/f towels. You should be good for about six months.
My average application time for steps 2-4 is 10 minutes.
Aquapel works best at speeds of 45 mph and higher. I rarely use wipers above 45. The exception is road spray. A wet road without active rainfall does need to be swiped because the droplets are too small to quickly combine and roll up and off the windshield.
This product dramatically improves vision during rainy driving conditions. It also aids in clearing ice, frost and snow for cars left outside, but you will still need to use a snow broom or ice scraper to remove the frozen water.

I avoided trying Aquapel for the longest time. I've tried every overhyped glass treatment on the market. Most of them worked about as well as the big box store stuff. Not so with Aquapel.

Aquapel lasts through the season of light rain we get in Oregon. It rains enough to block windshield vision, but not enough to properly lubricate the wipers. The result is that one or two swipes of the wipes and most treatments are compromised. I got multiple months out of this treatment.

Easy to apply, only thing is it goes on a bit thick on the first half of the windshield but I was able to even it out.

Really easy to put on windshield. We had rain for last week and product worked as advertised.