Just For Men Original Formula Natural Darkest Brown (H50) provides a hassle-free solution for coloring men's hair. Utilizing patented Grey Target Technology, this formula specifically targets gray hairs, delivering a natural look in just 5 minutes. It leaves hair appearing thicker and fuller and maintains color for up to 6 weeks until gray regrowth occurs. The targeted formula is an efficient way for men to maintain a natural appearance without the hassle of constantly coloring. Say goodbye to gray hairs in only 5 minutes with up to 6 weeks of lasting color. With each use, hair appears thicker and fuller, making for a youthful and polished look.