If your hair color actually lasts the projected six weeks, you're one of the lucky ones. More often, for the over-30 set, those gray roots start to show through long before you're due back at the salon.
You don't need to run to your hair stylist for a root touch-up, though. Today's home kits can do basic gray coverage and match salon colors just fine.
Of course, if your hair is blonde and your black roots are showing, you'll probably want to hit the salon for that touch-up. Quickly.
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