Black Henna adds colors and highlights to hair and helps to cover gray. It provides deep conditioning and helps remove dandruff. Unlike hair coloring which penetrates through the hair shaft, Henna gently coats the hair by sealing in moisture, making the hair thicker, stronger, shinier and lustrous. It nourishes the scalp, hair papilla, hair pigments that are responsible for the hair color. Also, it's an excellent way of conditioning hair and smoothing the split ends. The products contain no Ammonia or Peroxide.