Instead, these are hair dyes uniquely formulated for graying and meant to return you to your previously natural color.

Men dye their hair for all sorts of different reasons ... The color is a little lighter if coloring grey hair. It doesn't last like a permanent color, but I specifically wanted a semi-permanent ...

Just for Men has been a leader in hair dye for graying dudes for years ... It’s better to have a little of the grey still showing than to have the color look super dark and fake," he advises.

The medical term for hair graying is canities. Hair turns gray (or white) when your hair follicles stop creating melanin. Melanin is the substance that gives your skin and hair color.