Olaplex LashBond Building Eyelash Enhancer SerumA highly concentrated, clinically tested lash serum that creates the look of longer, thicker, stronger, and healthier lashes in as little as four weeks. This lightweight serum delivers powerful lash enhancers, including exclusive Olaplex Peptide Complex Technology to support the natural growth cycle and lash retention. See more conditioned, healthier looking lashes in as little as two weeks and longer , fuller looking lashes in as little as four