Eyebrow tinting is the process of applying semi-permanent dye to enhance, shape, darken, and define your brows. Darkening the tiny, fine hairs in and around your eyebrows helps create the illusion of thicker, fuller, and longer brows. “Tinting allows a professional to manipulate the brow area by darkening the fine hairs that surround the perimeter of the brow to increase the width,” says Sacks. “It also allows the specialist to darken the fine hairs in the inner core of the brow that are in less dense areas. This creates a longer brow line (brow tail) or fuller front and a more ideal shape.”