Indigo powder is obtained through a process of fermenting and drying the leaves of the indigofera tinctoria plant. The plant is known for its rich blue dye, which has been used for centuries in textile dyeing and for coloring hair. Indigo powder is primarily used as a natural dye for textiles. It produces a deep, vibrant blue color that is highly valued for its intensity and resistance to fading. Indigo powder is believed to have cooling and antimicrobial properties, which can benefit scalp health. It is often used to control dandruff and nourish the hair follicles.