Comes with a bundle of 3 Serums! (3 for the price of 1) No 7 LABORATORIES FIRMING Booster Serum is our most concentrated firming serum to date. Designed to intensively target those areas that are prone to sagging to deliver fast, visible results. This serum is made to be applied directly to the areas of your skin that are most prone to loss of firmness including the neck and jawline. Formulated with 4x more firming complex than our clinically proven serums