Laura Mercier Real Flawless Weightless Perfecting Serum Concealer in shade 3N1 is a hydrating, buildable concealer that comes in a 5.4ml size. It offers medium coverage with a natural skin finish and is designed to conceal under-eye circles, redness, imperfections and dark spots. The formula is non-comedogenic and weightless, with up to 16 hours of long wear that is waterproof and crease-proof. Apply with the doe-foot applicator, press and blend with fingertips, and layer for more coverage.