Try this sample of Indigo Powder To check with the efficiency of the product. Indigo Powder Does not work alone to color hair. It has to apply With Henna for black to brown Shade. \nIf you apply indigo leaf powder after the henna procedure it will give black shade in the two-step method. If you mix the indigo paste in already prepared henna paste, it gives brown shade to your white hair in one step method. This way you get chemical-free & damage free grey hair coverage to white hair by using two pure plants Henna leaf powder Mendi and Indigo Leaf powder.