There are so many reasons to avoid the salon. It's expensive, time-consuming and can be boring, especially when you feel like you need to go every six weeks or so. But there are ways to delay the inevitable. First, start in the shower. A good-quality shampoo formula that's tailored to your hair type - dry, oily, color-treated, etc. - is a great way to keep hair in tip-top shape. Dry, brittle ends are a dead...