Obagi Nu-Cil™ Eyelash Enhancing Serum Obagi Nu-Cil Eyelash Enhancing Serum used Nouriplex technology to enhance the eyelashes. It is designed to target the growth phase of the lash cycle to support overall lash improvement. Key benefits include luscious, thicker and more defined lashes. It is physician endorsed and opthalmologist tested! The proprietary NouriPlex™ Technology is a unique combination of ingredients Biotin, Panthenol, Sodium Hyaluronate and a Proprietary Lipid Compound that targets the anagen phase of the lash cycle.