Really sensitive scalp - but need to maintain highlights / dry hair - what products

[scatteredglitter]

I seem to react to most shampoos and it s especially worse for a few weeks after getting my hair done (coloured)
I get patchy very flakey dry skin - literally the skin lifts off in layers, at the moment it feels like there s scales patches.
I ve tried lots of dandruff shampoos. But they don't even touch it.
Hairdresser just shrugged and didn't offer much in terms of help once I said i had already tried the version she was plugging in the salon.

I ve tried
Pantene
Any of the l ordela Elvive/ head and shoulders
OGX
Sulfate free versions of what ever I can get my hands on
Keradtase
Redken
La Roche

At the moment my scalp is so itchy and dry and there s layers of almost scaley yellowish flakiness

Also I have balayage / highlights and it s always worse after this. (Though I only get it done every 6 months or so at the moment )
Hair is dry from colour and needs treatment too.

What do I need to do ?

Apologies for typos

Care more for your scalp than about colour treatments. Every time you apply these chemicals it makes it worse. Try T-Gel and give your head time to recover

Sounds like psoriasis