Indigo leaf powder & Henna Powder is a natural colorant. Indigo is natural and derived from indigo plant and can be used to colour hair naturally. Ayumi indigo leaf powder is a quality oriented product and is absolutely safe and free from chemicals and preservatives. Indigo application for hair colour has no side effects. Indigo can be applied by mixing with henna and can be applied separately as well. Do not get confused with the hardness of the packing. This product comes in a vacuum packing which appears to be hard or wet but once you open the pack you will find the original powder form only. Vacuum packing increases the shelf life of the product by protecting it from external air and temperature. How to use -: First use henna powder on hair. Soak henna powder in luke warm water for 2 hours, apply on hair, with help of brush and comb. Cover with a shower cap to retain moisture. Beard and mustache can be kept uncovered. Keep the paste on hair for 90 minutes and wash with normal water. Do not use any soap.