High street shampoos for brazilian blowdry

[DharmaBumpkin]

Hi there;
has anyone got any advice on what high street brands would be usable? I live in deepest darkest Wales so am over an hour from any proper shops... And really need to do some internet shopping and hardly any seem to say whether they are salt/sodium free!

TIA

Treseme Natural - It's quite new but I got it in Boots

Thank you will see if I can find a Boots large enough to stock it!

I've continued to use my usual Philip Kingsley shampoo/conditioner since having a brazilian as I only have to avoid sodium apparently.