Also see: Must-Haves of Travel: Coconut Oil Must-Haves of Travel: Apple Cider Vinegar Must-Haves of Travel: Activated Charcoal Yup! I know, it sounds kind of weird. I was like, “What the hell am I getting myself into?” But it’s been a month and I haven’t used any shampoo. And it feels great! What’s No ‘Poo?…