Khadi herbal hair colour henna amla ampamp jatropha red mix of ayurvedic herbs strengthens roots adding indigo cassia or amla will create different shades khadi amla henna indigo ampamp cassia can be mixed to create individual hair colours results from khadi natural hair colours depend on hair type existing hair colour duration ampamp warmth always do a strand test to establish colour desired before application 100g dyes shoulder length hair long las