Made with Powerful ingredients: Obagi Nu-Cil Eyebrow Boosting Serum has Biotin which specifically targets the natural development of Keratin & clinically proven Lipid Compounds that target the phase of the brow hair cycle to provide thicker, fuller-looking eyebrows. | Powered with NouriPlex Technology: This eyebrow serum is engineered with NouriPlex technology, a technology that contains the blend of four high-performing clinically proven ingredients to boost the serum for faster results & provide the necessary condition to the eyebrows. | Easy to use: Simply apply the brow growth serum to your eyebrows once a day, preferably in the evening for best results with fuller, darker looking eyebrows in as little as 8 weeks, & more pronounced results within 12 weeks. | Natural & Thicker Looking Eyebrows: Our serum has Sodium Hyaluronate & Panthenol. Sodium Hyaluronate is a form of Hyaluronic acid that retains water and provides the necessary hydration. Whereas Panthenol enables the eyebrows to maintain their moisture condition & texture improvement. | Medical Skincare Brand: Obagi Medical is a global medical skincare brand that's focused on creating skincare products that help unleash the full potential of the skin. Our skincare products are formulated to deal with a wide range of skincare issues including acne, aging, hyperpigmentation and much more.