You could go ’80s redux with Cargo’s waterproof Swimmables (far right, $18 for five, at department stores) liners or classic glam with Noir Retractable Waterproof Eyeliner (centre, $15, noircosmetics.com) in “Jet”—either way, it won’t come off in the pool.
Noir Long-Wear Eyeliner (far left, $15, noircosmetics.com) in “Forever Noir” glides on like butter with its vitamin E and jojoba oils, while Yves Saint Laurent Dessin du Regard Long-Lasting Eye Pencils ($28 each, at Holt Renfrew) in “3” and “5” have sponge tips for artful smudging.