This Black henna is used to colour your hair without using any chemical. Use the Pure henna the first day as directed on the pack. Mix the Black Henna the second day in water and apply immediately on the hair and wait for 2-3 hours. Rinse off thoroughly with any tvam natural shampoo. The Black colour will be effective in 48hours. Do not use any oil on the hair when applying this henna and if the hair is oily, remove the oil before application.