Hi

Just got some chemical guys windscreen treatment 100ml which I heard was good , has anyone used this ?

I'm just wondering if I use this will I need to use other glass cleaners like fast glass on top of it , or would this give a nice clean shine to my windscreen.

cheers

What is it called and who makes it?

I assume he's referring to this http://www.chemicalguysuk.com/product_p/rain.htm

if so, the glass ideally needs to be washed, then preferably clayed, or if not claying i'd use some Autoglym glass polish to remove any ingrained residues before applying this. Then just use fast glass when your windows need a spruce up. After application i'd personally keep fast glass use to a bare minimum to prolong the protection. :)