RapidLash Eyelash Enhancing Serum is a clinically tested lash enhancer that helps improve the appearance of lashes. This serum is formulated with a blend of potent ingredients, including polypeptides, biotin, and panthenol, which work together to nourish and strengthen lashes. With regular use, you can expect to see longer, thicker, and more voluminous lashes. The serum is easy to apply and is safe for use with lash extensions. It is also fragrance-free and ophthalmologist-tested.