How Long to Leave Hair Color On By: Marty Updated On: October 23, 2017 More Articles How to Remove Just-for-Men Hair Color How to Put Red Highlights Into Dark Hair How to Cover Gray With Highlights of Light Brown Hair How to Remove Spray-on Hair Color From Your Hair How to Gradient Dye Hair About the Author Marty has more than 22 years of training and experience as a hair stylist, redefining the typical hair cut by bringing together fashion, beauty, wellness and art.