Instant Black Hair Dye:This product is simple and convenient to use, you can dye hair at home, just need to put on gloves, and use it the same as normal shampoo, wait for only 10 minutes, you will get the hair color you want. 3 In 1 Hair Dye Product: One product, three uses. The product can be used not only as a black hair dye but also as a hair shampoo and hair conditioner. Easy to Use: Requiring no bowl or brush, just put on plastic gloves , apply the instant hair dye shapoo on your hair, massage for 5- 10 minutes so that the shampoo covers your whole hair and scalp, and rinse well, you'll get the hair you want. Gentle & Safe: Different from traditional hair dye. Herbal essence formula, mild and non-irritating, nourish the scalp and supplement the nutrients needed by the hair. Gray Hair Coverage: Suitable for all types of hair, including thick, fine and normal-density hair, as well as straight or curly hair textures. Effectively cover gray hair, you will no longer be affected by gray hair.