A precision tip, tapered eyeliner pen by MAC. The best-selling Brushstroke Liner in Black offers up to 24 hours of smudge-proof, high-impact wear, with an ultra-pigmented payoff.Master liquid lining with this effortless pen, designed to create the perfect line in one sweep. Use the brush tip for a fine line, or the flat side for bold wings and filling in. The long-wearing formula is sweat and humidity-resistant, but easily washes off with just warm water.