Sorry in advance if this has been covered in depth, but I wasn't able to find anything helpful with the search function.
I honestly don't even know where to start. My biggest problem is that I have eczema on my scalp. It's almost always itchy and flaky. Anti-dandruff shampoos don't work because they usually contain anti-fungals like tea tree oil or pyrithione zinc which don't treat eczema. The only things that seem to help is washing my hair a lot (which causes breakage and extreme frizziness), or soaking my scalp with rosewater using a syringe and wrapping it up for at least a few hours (which actually feels nice, but loses effectiveness after a few days). I really need at least one other option (preferably two), so I can alternate in order to maintain a base level of effectiveness.
My second major problem is that I just don't have any idea what I'm doing when it comes to hair care in general, I'm not even sure what my hair "type" is (except it is curly) or of it even really matters when it comes to keeping it healthy looking and manageable. I spent most of my life walking around with what looked like a bird's nest on my head, until one day I just said fuck it I'm going to do the opposite of what everyone tells me and started getting my products from the black girls section of the shampoo isle and suddenly my hair doubles its growth speed and is half as frizzy. Honestly I can't even tell you what the difference is between products. I switched brands every time I bought a new bottle trying to find something that actually helped but they were all the same until I tried Cantu, and it was the first time I didn't end up pulling out literal HANDFULS of hair while washing so I've stuck with it for the last year.
At this point idk if everyone who gave me advice in the past was trolling me or if I'm just weird. Trolling seems likely because I can't even count the number of times I was told that oils would fry my hair, but that was a lie, oil seems to be my hair's best friend. Honestly, I'm just confused. Any and all advice is welcome. Feel free to rant too. I'll take quizzes, I don't care. I just need answers.
Edit: I've tried everything. Vinegar, beer, the expensive crap, homemade crap, eggs, silk extract, PLACENTA. Honestly there's no logic to it.