Ah! It's just a problem of finding out which product suits you then - in as much you find one that you're not allergic to, and which gives you good colour and condition. Trial and error really. I've seen ABers suggest Belle Colour, but a friend of mine tried it and her face swelled up. She turned to L'Oreal products and was fine with that - but it's pretty much each to their own. Why not have a word with your hairdresser and see what she recommends. She might use Wella stuff on you, in which case you could go out and buy that yourself, knowing that it's a safe one to use. Are you planning on an all-over blonde?