Obagi Nu?Cil Eyelash Enhancing Serum uses NouriPlex? Technology, blending biotin, peptides, sodium hyaluronate, and botanicals to support the look of fuller, thicker, and darker lashes. In a 16-week clinical trial, 89% of participants experienced increased lash density and thickness. This clear, lightweight 0.1?oz serum is easy to apply along the upper lash line, absorbs quickly, and enhances natural lash definition without causing irritation. Suitable for normal, combination, dry, or oily skin, it should be used nightly to nourish delicate lash hairs and gradually increase visible volume. Product Features: NouriPlex? blend: biotin + peptides support lash strength and fullness Sodium hyaluronate: hydrates lash hairs for enhanced volume Lightweight, clear serum: oil-free, non-greasy application Clinically tested: 89% saw increased density and thickness in 16 weeks Gentle formula: safe for sensitive or over?tweezed brows How to Use: Clean and dry the upper lash line. Apply a thin layer of the product nightly along the base. Allow serum to absorb before other products. Store at 15?25?C, away from direct sunlight.