Each package contains four ampoules (use one ampoule per week) along with seven companion applicators for use with each ampoule. Use one fresh applicator each night. This provides a generous 4 week/1 month supply. Apply every evening to cleansed lashes and/or brows. Using scissors, cut open end of ampoule and gently squeeze out enough serum to completely cover sponge tip applicator. Using sponge tip target the follicles by applying directly to base of lashes (upper & lower lash line) and/or brows for maximum follicle absorption. Avoid getting product directly into eyes. Dispose of applicator after using and do not reuse. Should excess product get into eyes, simple rinse with cool water.