Lots of people will tell you to avoid home hair color like the plague. In fact, you can do great things with color at home. You just have to know what you're doing.
That's the big difference between you and a hair stylist: Knowledge and practice.
These days, the actual hair color sold in the drug store is much like the stuff in the salons, with high-quality ingredients, natural components and added conditioners. The key is what you do with it.
If you avoid the cheapest boxes, follow the directions to a tee and try out a few different products (and colors) over time to find just the right one, you can come close -- almost indistinguishably close -- to a salon result.
The exception is damaged hair or a dramatic color change. In those cases, the customization you find in a salon is worth the money.
Up next, those gray roots…