What It Is:A highly concentrated, lightweight serum with powerful eyelash enhancers like exclusive Olaplex Peptide Complex Technology to support the natural growth cycle and lash retention. See the look of longer, thicker, stronger, healthier lashes in as little as 4 weeks.*Key Ingredients:- Peptide Complex Technology: Proprietary blend to support the natural growth cycle and lash retention.- Bond Building Technology: Supports the skin barrier for a better environment for natural lash growth.- Hyaluronic Acid & Biotin: For healthy-looking lashes. Reduce the feel and look of dry, brittle lashes.Free Of...Prostaglandin, nuts, parabens, phosphates, phthalates and gluten.Clinical Results:- Lashes look longer and more lifted- Lashes look thicker and denser- Lashes look healthy and hydrated*In as little as...2 weeks: Experience more conditioned, healthier-looking lashes4 weeks: See longer-, fuller-looking lashes*- 94% experienced more voluminous-looking lashes- 97% reported improvement in the appearance of denser lashes- 97% reported improvement in the appearance of longer lashes- 100% reported improvement in the appearance of thicker lashes**Results may vary. As reported by participants at the conclusion of a 12-week consumer perception clinical study of 33 subjects with 2x daily use. Olaplex products are thoroughly tested in accordance with industry standards in-house and by independent third-party laboratories for safety and efficacy.