RPK Waterproof EyelinerRPK Waterproof Eyeliner The RPK Waterproof Eyeliner is a high performance makeup essential designed to provide rich, precise eye definition that lasts all day without smudging or fading. Its smooth, pigmented formula glides effortlessly along the lash line, allowing you to create a variety of looksfrom thin, natural accents to bold, dramatic wingswithout tugging or pulling on delicate skin. Whether youre heading to work, a night out, or through a long