To get the most out of your investment we suggest placing one drop of Latisse into the cap of a bottle and then dipping a very tiny eye liner brush into the cap. Apply to the skin at the base of your upper lashes, like you would apply eyeliner. One drop is usually enough to cover both eyes. You only need to apply to your upper lash (Not your lower lashes). Latisse comes with a supply of disposable brushes that will use more product than necessary. We suggest using a small sanitary pair scissors to cut half the bristles off for economical usage. Alternatively you can use your own thin eyeliner brush being sure to clean the brush with gentle cleanser, rinse and let dry after every use.