Indus Valley Bio Organic Medium brown Hair Color now you can change your hair colour without using harsh chemical/ naturally with the Organic Herbs. As it prevents you from other hair related issues Like hair loss, dandruff, Premature Greying, Dryness. it is suitable for hypoallergenic people. It does not contain Chemical, synthetic fertilizer or pesticides. . As it contains Henna (Lowsonia Inermis), Indigo (Indigofera Tinctoria), Colourless Henna (Cassia Auriculata). combination of these three herbs gives you brown hair colour in just 40 minutes.