The Neutrogena Healthy Lashes Lash Enhancer Serum is a gentle yet effective lash enhancer that helps to promote the appearance of longer, fuller lashes. This serum is formulated with a blend of peptides, biotin, and antioxidants that nourish and condition the lashes, helping them to appear thicker and more voluminous. With regular use, you can expect to see visible results in just 4 weeks. The serum is ophthalmologist-tested and safe for contact lens wearers. If you're looking for a reliable lash enhancer, don't miss out on the Neutrogena Healthy Lashes Lash Enhancer Serum on Amazon Prime Day.