Just jaivik 100 percent natural indigo powder is a excellent natural alternative to chemical hair dyes.; It is free from any form of chemicals, parabens, preservatives, ppd, ammonia or peroxides.; Packed in aluminium foil pack to preserve it for long with same freshness.; Can be used with or after henna application to get dark brown to black shades no hair.; Can also be used for any other dye formulation. Strictly for external application only.