I use ecover instead of fairy for cleaning windows, really it is fairy but without the harmful chemicals.
I cant believe the difference in my hands from previous years.
When my hands get a bit roughed up with the fibre glass pole, just a dab of Neutrogena "Norwegian formula" and my hands are back to normal
Another thing i have found is to look at which squeegie handle you use, i find black rubber or metal handles will stain your hands, switch to unger ergotec (The green one) and you will stay cleaner longer.
Dave