Indus valley bio organic dark brown hair colour which is commonly used by people it gives you natural hair colour without a chemical and also it is a complete hair treatment it gives you colour, prevent hair loss, dandruff, suitable for hypoallergenic people. It does not contain chemical, synthetic fertiliser or pesticides. Indus Valley bio organic soft black hair colour is usda, ecocert and 100 percent organic certified hair colour. As it contains henna (lowsonia inermis), indigo (indigofera tinctoria), colourless henna (cassia auriculata). Combination of these three herbs gives you black hair colour in just 40 minutes.