Here are the mixing instructions:
100g body art quality henna
100g organic indigo powder (from Henna Sooq)
100g organic amla powder (from Henna Sooq)
Mix the henna powder with enough apple cider vinegar to make a runny paste, similar to the consistency of a thick gravy. Cover it with plastic wrap and set aside for 3-4 hours for dye release.
Mixed indigo powder with warm water to get the same thick gravy consistency. Cover and set aside for 10-20 minutes for dye release.
Mix amla powder to the same consistency.
Once the henna and indigo have achieved dye release, mix all 3 pastes together and apply to the hair.