Steel Wool....never heard of this before
 

I just did this to all three of my vehicles, I did notice the difference, plus it made me find all the little nicks & chips in the windshield of my DD.

I would think you could use the synthetic "steel wool" instead of the metal ones

+1 For Stoner
 

Love the guy's comment, "Because we're all OCD, watching these videos." How true.

Just bought my Stoner tool from Amazon. Love the name. Had to have one.

I'm still waiting for nanites to do this work for me!

What year is your E36? I have a '95.

I use newspaper to clean all glass. Cars and home. I get a pump spray bottle, add a small amount of dish detergent, then the rest water. Spray a good amount on the glass and clean with newspaper.
After cleaning, I use a microfiber towel to remove any leftover film.
This technique works well for me, and is very cheap.

Available in India? :confused:

Try a micro fiber cloth.

I've found the Mr Clean Magic Eraser + your fav window cleaner works fantastic on cutting the inside windshield haze. Follow it up with a micro fiber towel to make it shine.

In the super market here they sell a cloth specific for window cleaning, almost like a micro fiber towel, and I use the RainX window cleaner no ammonia in it.

Outside about 2 times a year I take a clean clay bar and clay it like the paint but no wax lol.

These work remarkably well on the inside of the windshield:
https://www.amazon.com/cloth-Home-Cleaning-Set-Piece/dp/B00A391WW8

I work professionally as a car detailer and windows are definitely annoying. An easy and simple way is to use one towel as a cleaning towel and another towel as a drying towel in a way. Make sure the cleaning towel does not get too saturated though or else it wont work as well. This will work well with pretty much any towel. Paper, microfiber, waffle weave, newspaper, etc. Its not the best method but its very efficient when you get it right and will get your windows 95% clean and streak free.

I started my own photocopier repair business when I was 19. I did that for about 8 years.
Most "repairs" actually just involved cleaning due to dirty optics.
After trying many different products and techniques, this method is what works best:

1) clean thoroughly with a paper towel saturated with rubbing alcohol to remove any dirt or grime.
2) quick wipe down with a wet towel or cloth to remove any residue and to wet the glass.
3) buff dry with a clean, dry towel to remove/prevent streaks (terrycloth towel or rag works best).

Most glass cleaning products will leave streaks or residue that may take a week or two to show up, especially ammonia based.
The above method works great every time and will leave the glass clear and streak free. ;)