If you're betwixt and between, trust the one with red hair.
Red hair is great. It's rare, and therefore superior.
Red hair stigmatizes you.
A hairdresser who did my hair said, "You, my darling, have something that we call successful' hair," which is basically battered hair that's split and falling out in the back because you've had to blow-dry it every day. I don't want my hair falling out, so I wear wigs!
I wash my hair after every shoot. If I'm not shooting I can normally do it every other day. I always follow my tailored haircare routine and stick to that, and I always get great results.