As a
pharmacist and a human being (the two can co-exist in the same point of space-time), I can only say, "Please please
wash your hair." If you don't want to buy shampoo from my shop, that's fine. Use dishsoap. Anything. Rinsing your hair with water is as close to cleaning it as lighting a match to your cigarette will cook your cutlet. I have seen cases of cradle cap that make me
cringe at the mere word "cradle" now.
Basically, the human body is designed to smell strongly and badly to help mark territory. We produce foul oils and nectars that perhaps only our cats and dogs can decipher now. They state our age, sexual potency, basic disposition, dietary prefereances et al. But our senses have dulled as we have stood straighter, donned trousers and skirts, and hired lawyers. So now we just smell bad.