The Olaplex Lashbond Building Serum is a highly concentrated lash serum expertly formulated to support and sustain the natural growth cycle and lash retention, promoting the appearance of longer, thicker, and healthier lashes. This clear, lightweight formula features the NEW OLAPLEX Peptide Complex Technology, OLAPLEX Bond Building Technology, and a nourishing complex of Hyaluronic Acid and Biotin, which collectively work to deliver stronger, denser, and more voluminous-looking lashes with improved condition. For optimal results, simply apply a swipe of the serum to the lash line each morning and night, allowing it to optimise your natural lash potential for a truly transformative look