Avuri ilai powder, also known as indigo leaf powder, is a fine powder made from the leaves of the Indigofera tinctoria plant, used primarily as a natural hair dye to achieve a blue-black or dark brown color, especially when combined with henna. It is also valued in traditional and Ayurvedic practices for its benefits to scalp health, and in some contexts, it has been used internally for its potential health properties. The powder is a natural, chemical-free alternative to synthetic hair dyes and is often described as strengthening hair and potentially delaying premature graying. 

This is its most common use, providing a deep blue-black color. When used after a henna treatment, it creates a dark, rich black color on the hair.

• It is a popular choice for those seeking to avoid synthetic hair dyes and their harsh chemicals.
• Scalp health: It is believed to promote scalp health, strengthen hair roots, and reduce irritation.