As you might gather from the name, grombre hair is gray ombre hair and it’s amazing! I was in love with the gray hair trend that was going on and grombre is even better if you can believe it. There are so many ways to rock grombre hair and I’ve seen tons of variations on IG already so there’s really no right or wrong way to do it. You can go super light gray to where it looks silverish or go darker to almost a charcoal gray.