I first tried this a few years ago and it didn't work. After all the recent TV commercials and being a total suckerrr (and mumsnetter's recommendations) I bought some more.
Cost me over 6 quid for a ridiculously little bottle (I even got extra-strength). and I'm still FRIZZY. Admittedly, I do have hay for hair but I have had better products for far less cash. Just wanted to warn fellow frizz-balls of my recent experience. Will be trying kerastase curly head or something I saw advertised in shop window. You may note the effect of advertising on simple, homebound souls like me.