Most Helpful Girl
why would you want gray hair? and there really is no way of knowing. some people start to get gray hairs as early as their 20s, others reach 60 and have no gray. It really depends on the person. I think the average age to start graying is mid to late 30s and then many people are fully gray in their 40s to early 50s but it really varies. I work with a lot of people in their 40s and 50s, most of the men that age are salt and pepper or fully gray.
There is no way to make it faster, no.
Also if you are a natural light blond you may not get so gray just fade to white eventually.