Ooooooh-kay. I've been told for years and years that my compulsion to wash and condition my hair every single day is just the product of being constantly sold shampoo by big bad corporations, and that no one needs to wash their hair every 22 hours or so, and so forth.
But now that NPR tells me this, I might actually give it a (very short-term) shot.
I have fine, thin, stick-straight hair. It starts looking greasy when I hit the 26-hours-unwashed mark. I know many of my friends with thick, wavy, or curly hair look at me in horror when I tell them why yes, I do shampoo every single day- but c'mon, guys, you have 1) more hair, 2) more texture, and 3) less oil, apparently, than I do.
But it's spring break, and I'm not going anywhere, and I'm down for a little experiment. I last washed my hair on Wednesday morning, and since I don't have any plans that involve leaving the house or looking presentable until Sunday afternoon, I'll go until then sans shampoo.
I'm shuddering just thinking about this.
I may be resorting to jaunty hats and scarves-as-headwear by tomorrow morning.