people who don't wash their hair

There's these weirdos who think shampoo will kill you or some stupid shit, so they don't wash their hair.  Then they make up stories about how their heads now grow fuller and nicer hair somehow.  People sometimes, I don't know.

I haven't used shampoo in months and I have received nothing but compliments on my hair's texture. Unless one has a really bad grease problem, shampoo is not needed.