Stay well clear, I worked in a few dealers years ago and it is utter rubbish, its bought in for about £10 and is basically cheap polish - most of the time its not even applied.
Autoglym is far better, the only stuff that occasionally worked (if applied) was the fabric protector - but you can buy that yourself for sod all.

If you want real protection, look at professional ceramic coating using these products:
http://gtechniq.com/products/auto/protect/exterior/paint/exo-and-crystal-serum-light

Well recommended by detailers - and it truly does work.

Regards,
Nick

Aero 8 GTN #11

"What we do in life.. echoes in eternity."