From Greatist.com…..
You wash it, brush it, blow-dry it, straighten it, curl it, and/or put all kinds of products in it. And, although it may, indeed, have that drip, there’s no question that your hair goes through the ringer on any given day.
Before you know it, your tresses can show signs of damage, from split ends to uncontrollable frizz. And the older we get, the more it naturally thins out and looks dull or damaged.