Every swipe of this clear, lightweight lash serum delivers highly effective concentrations of NEW OLAPLEX Peptide Complex Technology™, OLAPLEX Bond Building Technology™, hydrating Hyaluronic Acid, and Biotin to the lash line to support and sustain the natural growth cycle and lash retention. Experience more conditioned, healthier-looking lashes In as little as 2 weeks and see the look of longer, fuller lashes in as little as 4 weeks. Ophthalmologist tested. Prostaglandin free.