i've had similar problem (head and shoulders not working etc.). I never had a problem with dandruff until I came to college and began showering with city water. Once i did that I began getting it even in the summer. I've started using Selson Salon, same as Selson Blue, and it's worked for me. It's $8 or so at wal-mart, cvs, walgreens, whatever is close to you, but I picked some up at a discount grocery for a couple bucks