Instant gray blending. Tones down gray for a natural, blended look in 1 use. For guys who want to keep some of their gray, Just For Men touch of gray blends away a little gray, but not all of it. With this easy, no mix, comb-in formula, all you need is 5 minutes to instantly have a more balanced, naturally blended salt and pepper look. Lasts up to 8 weeks until the grays grow back. Can't decide between two shades? Try the lighter one first. You can always go darker later.