Color: black, dark brown Product efficacy: The hair dye pen can effectively cover the gray hair on the hair, make the hair color even and natural, and improve the overall styling effect. Features: 1. Convenient and fast: The disposable hair dye pen is designed to be portable, simple and fast to use, and can be used to dye hair anytime and anywhere without the need for additional tools or equipment. 2. Various color options: Disposable hair dye pens are available in a variety of colors. You can choose the color that suits you according to your personal preferences and enrich your style. 3. Long-lasting color: The hair dye pen has strong dyeing ability, which can make the hair color lasting and bright, not easy to fade, and maintain beautiful hair color for a period of time. 4. Cover gray hair: The hair dye pen can effectively cover the gray hair on the hair, making the hair color even and natural, and improving the overall styling effect. 5. Gentle and non-harmful to hair: Disposable hair dye pens usually use mild formulas and do not contain harmful chemical ingredients. They are gentle to the hair and scalp and are not likely to cause allergies or damage. How to use: Comb hair and make sure it is dry. Open the hair dye pen and press the pen body to apply the hair dye evenly to the hair area to be dyed. Use a hair dye pen to apply evenly along the direction to avoid dyeing the scalp. Wait for a certain amount of time (according to product instructions) for the hair dye to fully penetrate into your hair, then rinse with clean water. Use post-dye hair care products to keep hair soft and shiny and extend the durability of hair dye effects. Package includes: 1*disposable hair dye pen