With its, BREAKTHROUGH MASSAGE TECHNOLOGY, Mister lash Booster is an all-in-one Eyelash Care & Makeup Routine. A lash care, a lash primer & a transparent lash makeup! Thanks to the combination of a transparent high-performing formula & a specific massage applicator, Mister Lash Booster helps nourish and fortify lashes for a denser and more resistant fringe. And on top of that? Mister Lash Booster can be used day and night!