Eyeliner tattooing is a cosmetic procedure that involves applying permanent makeup to the eyelids. This technique enhances the eyes by creating a defined line along the upper or lower lash line, mimicking the look of traditional eyeliner. The process is performed using a specialized tattoo machine or hand-held tool that deposits pigment into the skin. The procedure typically takes about one to two hours and may require a touch-up session after a few weeks. While the results can last for several years, the longevity depends on factors like skin type and sun exposure. Proper aftercare is essential to ensure optimal healing and color retention.