seborrheic dermatitis
"I lived with this condition years before I found DermaZinc shampoo. I tried everything. NOTHING ever helped, except a large shot of some kind of cortisone at a dermatologists office.  That helped for a few weeks.  4 to 6 at most.  DermaZinc worked well for me the first time. Like a miracle. I use it once to twice a week and have no breakthrough. My only complaint is it is very drying and you have to use a conditioner. My scalp is sensitive to most and will break out due to dyes or scent. When I first found it there was also a conditioner, which is no longer available, ALa Scalp I think.  It was wonderful. Now I use as natural a conditioner as I can find like Burt's Bee's and try not to get much on scalp and rinse well. A bottle lasts 6months."