The Serum Aftercare Mascara has a natural Biotin formulation that safely and gently stimulates the growth of the lashes. A clear mascara, applied 1-2 times a day for best results. This serum is fantastic for clients who have recently had lash lifts or extensions and the lashes may appear to be more damaged or sparse, or for clients who are looking for a safer alternative to harsh growth serums. It also keeps lashes extremely hydrated and nourished post service. After about 15 days of use, clients will notice an improvement in the overall health of the lashes.