Eyeko Sport Waterproof Eyeliner in Black. Eyeko Sport Waterproof Eyeliner in Black. At the gym, by the pool, or on vacation, the Sport Waterproof Eyeliner by Eyeko was designed for an active lifestyle. This multi-purpose gel eyeliner glides on smooth and lasts under the most extreme sports activities. This sweat-proof and stay-put waterproof formula is enriched with Coconut Oil for an ultra-smooth application that defines and intensifies.. Twist up application with convenient built-in sharpener and brush. Carbon-black finish. 100% cruelty and paraben-free. 0.017 oz. Draw along the upper waterline to tight line for the appearance of thicker lashes. Use with the Eyeko Sport Waterproof Mascara. EYER-WU11. 11318084. Discover the go-to global brand for iconic eyes, with a focused edit of high-performance eye makeup. Eyeko reinvented an eye wardrobe of Korean-made botanical formulas for instant results and easy application. Their products promise to provide long-term lash care while delivering strong color pay off and long-lasting results.