Achieving black hair color with plant pigments is totally possible with a two step application using henna and indigo. There's no other dye on the market besides herbal powders that can produce black hair color without using any chemicals.
 
This process is completely natural and safe for clients with allergies or sensitivites to PPD and chemical dyes.
 
Kit includes:
120g Henna (lawsonia inermis)
120g Indigo (indigofera tinctoria)
2 Processing caps
2 Sets of gloves 
2 Cotton strips for hairline