Safe Formula: This hair dye with comb applicator is crafted with rigorously tested, safe ingredients that are gentle on all skin types Portable: Our innovative hair dye combines a built-in comb applicator, making it easier than ever to achieve even coverage, compact and stylish design makes it easy to carry wherever you go. Whether you are going out or on a business trip, you can use the built-in mirror to quickly touch up your hair and create a style Quick Results: Experience rapid transformation with our hair dye brush that effectively covers gray hair and restores natural color in just minutes Sweat-proof and Waterproof: Our hair dye comb is sweat-proof, waterproof and oil-proof, allowing you to be confident all day long. It ensures dry, long-lasting results even in challenging conditions Single Use: Our hair dye is a one-time product and is not a permanent color fixer, so you need to wash your hair the same night after us