Removing those STREAK marks and the dusty moisture on glass can be challenge
If the size of the mirror or glass is small or medium use this method
Wet fluffy Microfibre cloth SHYN Ultimate to dryBUT if the glass is this big use the window washer and squeegee then wipe any missed bits with the Ultimate. This kit is called the window bundle or the window kit.
The window washer is made from the same thing as the Microfibre cloth that’s why it does the same thing
The squeegee obviously remove the water quicker and easier on your body and the Shyn cloth Well that’s that’s an amazing cloths that absorbs water on impact first touch
Whatever way you do it’s easy and requires no chemicals 
Products found in the window section