After years of trying a variety of dandruff shampoos to treat what I thought was dandruff, I finally found a hairdresser while traveling in Texas that explained the difference to me between dandruff and a dry itching scalp that was most likely stress related.  All of this time I was trying to treat a condition that I didn't have.  She suggested that I start exploring shampoos and conditioners that contained tea tree oil as a primary ingredient to help soothe the scalp irritation (she also suggested a yoga class to help control the stress) and so I began exploring options at the local health...