I recommend Kerasis shampoo, which I bought with my own money and is great even for oily hair!!

I used to just use whatever was available, but when I got stressed, my scalp started feeling hot and itchy. I found myself touching it unconsciously, which led to flaking. Realizing I shouldn't just use anything, I started searching and discovered Kerasis. It feels different from the Kerasis I usually use, but I was drawn to its nature-friendly green color. It has a refreshing grassy scent and lathers well.

If you pre-wash with this and then shampoo one more time, it leaves your skin feeling squeaky clean and refreshing.