Obagi Nu-Cil™ Eyelash Enhancing Serum helps to nourish lashes for a more luscious, thicker, and defined-looking appearance with results that continuously build day after day. Obagi Nu-Cil™ Eyebrow Boosting Serum helps address the appearance of thinning, patchy, and over-tweezed brows resulting in the appearance of fuller, denser, and darker looking brows. Achieve face defining lashes and brows with our specially formulated serums made with Obagi's innovative NouriPlex® Technology, a synergistic clinically-proven blend of ingredients shown to accentuate the healthy look of eyebrows and lashes in as little as 8 weeks of use. Key Benefits: NouriPlex™ Technology: is a complex blend of four high-performance ingredients that gives our brow serum the effective boost you need for results Biotin: supports the production of keratin Proprietary Lipid Compound: targets the anagen phase of the brow hair cycle to provide thicker, fuller looking eyebrows Sodium Hyalonurate: form of hyaluronic acid that attracts and retains water to both hydrate and thicken the appearance of eyebrow hair Panthenol: helps with hair conditioning, moisture, and texture improvement | Obagi Medical Nu-Cil Duo | Dermstore