Indigo for Black Hair How to use: We recommend to Dye your hair with Henna first before you use indigo for Best results. To dye with henna mix henna with warm water or lemon juice and let the mixture sit for 6- 10 hours. The paste should be in the form of pancake batter so it is easy to apply. Apply henna paste on your hair and allow it to stay on your hair for 4 - 6 hours. wrap your hair with shower cap and Prevent the contact with skin or it will stain your skin. Rinse and wash with water. You have dyed your hair with Henna Now Mix your indigo in hot water or hot lemon juice and allow to sit for a 15-20 minutes until completely dissolved. Put your indigo paste into an applicator bottle (IF AVAILABLE) with a nozzle...the kind you can get from beauty supply stores. Apply the indigo evenly throughout your hair. Cover your hair with a plastic cap. Use tissue around the edges of your plastic cap to keep the indigo from running. Cover with a towel. Keep on your hair for at least 2 hours. Some people will require longer time. Remove cap and rinse the indigo thoroughly from your hair. We recommend to apply indigo after a henna application. You can also mix your indigo with neutral henna powder(CASSIA OBOVATA) also available in my eBay store to condition while coloring with indigo application. To cover white hairs, it is best to henna the hair first to darken it and then use the indigo to shift the darkened hair to black. Hair color results with indigo in most case is black however it may sometime vary from very very dark dark brown, black to bluish black depending upon length of time you leave the indigo on your hair and how your hair takes the coloring. If dark brown results are obtained initially when using your indigo. Your second application will take your hair to black. Things to know: Use gloves when working with indigo. Indigo will dye your clothes. Your towel is going to have blue stains from the indigo.