Soft99 Glaco Q 75ml All-in-One Glass Sealant

 
Apply this, and the rain will bead up and roll off the glass, taking clean water with it as it goes. Just by driving at 45 km/h or more, all the water flies off the glass! No surface treatment required!
Glaco Q coats the glass while simultaneously removing traffic film or a previous coating. This applicator is shaped like a computer mouse and cuts down on the time it takes to renew your hydrophobic glass coating.
Everything you need is included in this one smart "mouse". Abrasives to polish the glass, as well as the coating.

How to use the product:
Ensure that you have washed the windshield completely clean and dry.
Press the bottle to dispense some product onto the glass and distribute it well over the entire surface.
Let it sit for 5-10 minutes.
Wipe off, preferably with a slightly damp cloth to remove the residue.

Product durability:
There is no official durability for the product. Initially, for the first few months, it will be incredibly hydrophobic and will gradually wear off due to your windshield wipers.
If you need a more durable product that lasts up to a year, you should look for a proper coating such as Diamond Protech Glass coating