If you're ready to cover your gray and skip the frustration of hair dye, follow these easy steps and see the wonderful results:
In a glass bowl place 100g of Pure Henna Powder. Mix it with water until you achieve a consistency like yogurt and Let the henna paste rest for 3 to 24 hours (If it dries, just add a little bit of water). After applying the paste, leave it in the hair for at least from 2 to 3 hours, then rinse only with water. The henna always deposits the reddish, coppery color in the hair but in the gray hair the copper or orange color is even more intense, but with the 2-step process (application of the indigo) the gray hair will be covered 100% giving it a dark brown or black color.
In another glass bowl mix 100 grams of Indigo Powder with water until you achieve a consistency like yogurt, let it rest for 5 to 10 min then apply it to the damp hair and leave at least 2 to 3 hours (the longer you leave it in the hair the darker and more durable the color will be). Rinse the hair only with plenty of water so that the color penetrates more and next day wash it with the shampoo and conditioner of your choice, but if you do not have time available you can wash it immediately after removing the indigo.
With these 2 steps process you can have excellent results.