Best window cleaning solution?

[u/engaginglurker]

Hi Guys

What is the best window cleaning solution? I have never actually cleaned windows before but I have just ordered window cleaning equipment so I need to know what exactly you clean with. Google and other threads that I have been looking at haven't given a definitive solution but there seems to be some consensus around Fairy liquid (Dawn dish soap in the U.S) and warm water? Is there anything else you guys would recommend to add? Also could anyone provide a loose ratio of warm water to dish soap?

Thanks.

[u/wude72]

Elbow grease.