Dealt with bothersome dander most of my life. Sometimes it would flare up worse than others. Using conditioner seemed to help in those cases. But recently things flared up bad. It was like Christmas all year around my shoulders. I was using an all natural shampoo and conditioner so it wasn't a chemically product that was the problem. But I stopped using them anyway and washed my hair with baking soda with ACV for conditioner. This helped for a few weeks but then it came back. So I got radical and washed my hair only in plain water. As a side note my hair does not smell nor look oily making me think shampoos and conditioners are superfluous. Anyway this has mostly worked keeping the dander at bay but not totally cured.
However things are slowly getting worse again and now I suspect much of the problem is the water itself. Our city among other things puts a toxic form of fluoride and chloramines in the water so my next venture will be to get a water filter for the shower. It makes me mad I have to go to such lengths as our government should provide clean non toxic water to us. But what can you do? So I'll just pony up for a filter and see what happens. I strongly suspect this will be the best remedy yet. I'll report back with the results as soon as I buy one and try it out.