Dandruff shampoo for coloured hair?

[SandDunesAndSaltyAir]

Hi, I desperately need a good dandruff shampoo for coloured hair! A combination of soft water and Head and Shoulders sorts out my itchy, flaky scalp, but I recently got my hair coloured for the first time and my hairdresser nearly passed out at the mention of H&S.

I've tried a few colour shampoos (Korres, Aussie, Lush) but even with soft water my dandruff is terrible.

Any dandruff shampoos that don't strip colour? Or colour shampoos that are good for dandruff? Thanks!

I used a Vichy Dercos shampoo with selenium which was quite gentle and didn't stripped out colour. I have seborrhic dermatitis so can only use certain types of dandruff shampoos and this was definitely the best of the non aggressive ones.