There are 28 shade options to choose from, and users rave about the excellent gray coverage and salon quality. One says, “So far, I am very impressed. I purchased the blue black. I have hair dye ...

Or can you reverse gray hair and return to your original color? To find out, we tapped dermatologists Sara Perkins, M.D., and Iris Rubin, M.D. Not only did they let us in on whether it's possible ...