Need suggestions for hair care in Bangalore

Hi guys, I’m staying in Bangalore and as you already know, the water quality here isn’t great. That’s why I use filtered water for my head wash. However, I still experience a dry scalp, frizzy hair, and flakes. Could you please suggest a good shampoo and/or conditioner for this issue? Also, if you know any good dermatologists in Bangalore, I’d really appreciate your recommendations.