Mina Ibrow Henna is a natural dye made by crushing the dried leaves of the henna plant into a fine powder, then mixing that powder with liquid until a paintable paste is formed. When that paste is applied to skin – or brow, the active compound in henna, known as awesome, leaves a natural dark stain. Once it’s applied to the skin, Henna Eyebrows lasts two to four weeks, depending on the saturation of the original application and how much the area is exfoliated prior to application.