Replying to Windex on skis?

A few years back I chilled with my friend at his house (theres a whole story for this but thats for another time) and he is mega big into racing. So I was down in his basement a good deal of the time observing how his dad and him waxed their skis. One thing I picked up from that is that if you put Windex on its supposed to be like a wax enhancer or something. I forgot EXACTLY what its supposed to do but they said that there is this product out there that is exactly the same thing as Windex but costs like 30 bucks a bottle. Ive been doing this everytime I rub wax mine and I think theres a diffrence but it could just be in my head. Anyone else do this?