When I was younger, I noticed that after a few days at our beach house my hair felt very dry. I chalked it up to different hair products, but even after using the same shampoo and conditioner, I didn't notice a difference. My hair felt different, and when I told my mother, she explained that the water was different in the city than it was in the small rural town. I always thought that all water was the same, and when you take a shower to clean ...