My name is Louisa. I work at Yahoo, and I am addicted to coloring my hair. I started dyeing my hair at the age of 14. To the surprise of anyone who has entered my life in the last 10 years, I was once ...

At this point, rainbow hair color is more than just a trend; it's grown into a category of its own. Now it's just as common to see someone rocking pastel or neon hair as it is blond or brown. It's ...