> “If you think about toiletries, you’re diluting those products with copious amounts of water,” said Kersley, “and they’re only in contact with your skin topically.” Toothpaste, on the other hand, goes in your mouth, and maybe down your throat.
...then why is it that can I find mouthwash in about half the hotels I stay at? Mouthwash "goes in your mouth, and maybe down your throat".
> Or perhaps it’s a simple matter of portability and convenience. A bottle of shampoo might leak in your luggage; a bar of soap is often slimy; a tube of toothpaste, though, can be tossed into your Dopp kit without a second thought.
...yeah, but have you ever had a tube of toothpaste leak or explode in your kit? What an absolute mess. It's happened twice in my life. The first time took forever trying to clean everything else - even then my deodorant case and razor handle always left my hands smelling minty fresh a long while. The second time it happened I just threw it all out and bought new gear. That's why I rarely pack a new, whole tube of toothpaste anymore.