Its really hard to get 99% alcohol here in the UK.
All we can readily get is 91%, which isn't as effective for scalp cleaning.
C22 is good, if you search eBay.co.uk for C22 under 'health & beauty', you'll find some UK places to order it from.
To get you started re shampoo, you can always use Johnson's baby shampoo as its very gentle.
You probably have a local Sally's Hair & Beauty Store near you and they do sulphate free shampoos:
http://www.sallyexpress.com/search.aspx?q=sulphate+free

You'll also see on that page some Hair Extension shine spray.
I've never used that particular product, but some sort of leave-in conditioner spray is something I'd recommend.

Again, Johnson's do a Baby No Tangle spray which I use daily.