This serum is ideal if you need something to strengthen your natural lashes and encourage lash growth. Use twice daily for best results. Oil-free – safe to use with contact lenses and lash extensions. Directions for use: • If wearing makeup, remove with an oil-free makeup remover or cleanser. • Apply only one stroke of the serum at the root of your upper lashes, twice a day. • Wait until the serum has fully dried if following with other products. • Allow the serum to work overnight