Just For Men Hair Colouring Subtly Changes Your Hair Colour In 5 Minutes And Lasts For Up To Six Weeks Just For Men Is Specifically Designed For Grey Hair. It Subtly Dyes Your Grey Hair To Match Your Natural Colour In Only 5 Minutes. The Colour Lasts Up To 6 Weeks Product Information:Just For Men Hair Colouring Subtly Changes Your Hair Colour In 5 Minutes And Lasts For Up To Six Weeks,Benefit:Just For Men Is Specifically Designed For Grey Hair. It Subtly Dyes Your Grey Hair To Match Your Natural Colour In Only 5 Minutes. The Colour Lasts Up To 6 Weeks,Product Specification:Product Code: 1420