Customer ReviewsAuthor: RV I have used henna for a long time on my hair. I used this item for the first time. I have natural black hair with some gray. I soaked henna in water for 4 hours and left it in my hair for 5 hours. I do not have any chemical on my hair. After all the careful application, it did not stain at all! Leave alone the tint on black hair, even my gray hair did not catch any color at all. It was a big waste of time for me. I do not recommend this product.