Over 7,000 reviews, ranking 4.6/5 this eyelash serum is top of its class! Packaged unopened, my loss is your gain! UNOPENED, still sealed in plastic and in box Promote your own naturally fuller and beautifully long lashes with the help of our best-selling Eyelash Boost Serum. Formulated with clean ingredients that are gentle and nice to your skin! Assists in improving length, density, and strength of hair thanks to a proprietary blend of amino acids and peptides.