I last had a salon keratin treatment about 5 years ago - and I've just booked another one for next week.
I recall having to use sulphate free shampoo afterwards, but I've seen that it's sodium chloride more than sulphates which ruin the treatment.
For those that have this done, what are your favourite sodium/sulfate free shampoos and conditioners?
I have shoulder-blade length, thick, curly frizzy hair which tends to be dry, and I have quite a dry, sensitive/flaky scalp. It doesn't have to be dirt cheap but not too pricey either!