A highly concentrated, clinically tested lash serum that creates the look of longer, thicker, stronger, and healthier lashes in as little as four weeks. Highlighted Ingredients:- Olaplex Peptide Complex Technology & trade;: Proprietary blend to support the natural growth cycle and lash retention. - Olaplex Bond Building Technology & trade;: Supports the skin barrier for a better environment for natural lash growth.- Hyaluronic Acid and Biotin: Promotes healthy-looking lashes and reduces the feel