Apply pure Henna on hair first and allow Henna to dry on hair for 3 to 4 hours. Rinse the henna from hair with water. After 6 to 12 hours, make a fresh Indigo Powder paste (95% Indigo Powder and 5% Henna) and apply immediately on the hair again. Allow this paste to sit on hair for 30 minutes and then rinse the hair with water. Do not wash with shampoo for 12 hours and you'll be amazed to see your hair turn black or deep blue-black.