Recommendations for women’s hairdresser that actually look at hair health

I’m looking for a hairdresser that will look at my hair health and make recommendations/perform hair services that actually benefit my hair. The salon I have been going to recently don’t seem to actually care about the type of hair I have. Bit of background, I (30sF) have a lot of grey hair and get the roots done every few months. I’ve noticed that when I get my roots done, the greys show up a week later (even though I’ve spent a shit ton of money on getting my hair done). Looking into it, it looks like maybe it’s something to do with my hair porosity. Also, I have wavy/frizzy hair and I’d like the hairdresser to recommend hair products that benefit my hair. When I lived in the UK, my hairdresser knew my hair well and my dye lasted for ages. Anyway, just wondering if anyone can recommend a salon that is good and cares about hair health? Thanks!