When you find a gray hair, you have two immediate options if you want to get rid of it: Ignore it, or pluck it. The commonly held belief is that it's smarter to leave it — because if you pluck it, many more grays will grow in its place.
"There's no harm in plucking a gray hair, but it also doesn't do you much good," explained Schueller in an email.
Plucking the hair will indeed get rid of the gray — but only temporarily. "The follicle (the little tube beneath the skin that produces the hair) is still alive and will produce another hair to replace the one that was pulled out," says Schueller, who is editor-in-chief of the blog The  Beauty Brains .
What do you do when you find a gray hair? Do you pluck? Leave it alone? Grab the box of hair dye?