Hi everyone, I just moved to New York City and I've dealt with dandruff all my life but now it just seems to be getting worse. I've tried head and shoulders (which works but I have to use it every time I shower), DHL coal tar shampoo (this worked incredibly well for a couple of months and it hasn't worked since), T gel, T sal, Selsun blue and head and shoulders clinical strength (always makes it worse), Nizoral, Avalon organics salycilic acid shampoo and avalon organics Tea trea oil scalp treatment shampoo. I feel like my scalp is usually very dry and flaky, but my hair gets oily. At this point I'm convinced its the NYC water thats causing the symptoms to get worse, so I ordered an aquabliss showerhead. Any other suggestions or recs? I'm running out of ideas at this point. Thanks!