Try using a non-alcohol-based lotion. If you can’t find one, I’ve had good success with Eucerin. I put lotion on my face and scalp right after my shower, and don’t have any itchiness or flakes.
I couldn’t find a shampoo that fixed anything for me.
If you have it on your elbows or knees (very common), you can try Aquaphor at night. That is pretty sticky, but keeps your skin calm and moist.
A dermatologist can give you some prescription lotion/cream, as well. That also works, but it’s typically a small tube and expensive.
If I’m gonna die, I’m gonna die historic on the Fury Road!