How to Fix Every At-Home Hair-Color Mistake

It's just you, plastic gloves, and a bottle of semipermanent red dye. What could possibly go wrong? Oh, right. A lot. Cassondra Kaeding, a colorist at Sally Hershberger Los Angeles (she has worked with Kate Hudson, Lea Michele, and Rooney Mara) tells us how to fix every possible at-home hair-color disaster.