Very interesting topic but...I will stick with shampoo and chemicals and all the "harmful" additives...my only real vanity is my hair, I keep it either up or braided, I watch the color and have it high lighted when it needs it. I also maintain it so it looks nice, is always soft, and my husband loves running his fingers through my hair or playing with it.
I would also think, someone who doesn't wash their hair often would have the body odor smell to them, GROSS! I can stand any smell but sweat and B.O. So no thank you. My husband is military to the core and showers every day and washes his hair....thank goodness!