I'm having a dandruff issue. I've read the memories. Hell, I've sort of dealt with this before with my other two sets. I've done the apple cider vinegar rinse, and the only issue with that is fear of it softening my hair too much (because this is what it does when you use it for no 'poo, which I used to do with my brushable hair) and preventing knotting/loosening my knots.
I use lavender Bronners and wash my hair every 5 days or so. They're about a month and a half old.