Think about your towels. You wash them, you dry them, and somehow they feel like sandpaper. Hard water is usually the culprit. All those minerals—calcium and magnesium—build up in the fibers, making your fluffy towels feel scratchy and dull.
Your hair feels the same way. After a shower, it might feel a bit like straw, even when you use pricey conditioner. That’s not your fault; that’s the water working against you.