A family friend used to work as a hairdresser for many years & quit as her salon closed 10 years ago, but always helped my family with regular cutting & chemical dyes.
I've been CO washing for a year, no cones, oiling, & just ditched chemical dyes for henna.
I've been avoiding her as she is a very stubborn, strongly opinionated lady, an old school hairdresser. I've been afraid to tell her, and bit the bullet yesterday.

Her response?
"...Henna? Oh that's awesome! I'm sure it suits you nicely. "
"Yes I know you don't use shampoo, I've seen your bathroom. Did wonders for your hair."

I'm amazed, by looking at her own hair, or the commercial products she uses on people you'd never guess she has further knowledge.
I was contemplating switching to a long hair friendly, open minded hairdresser when I've had one all along.