FUNCTION: thicker fuller hair,and help maintain the health of the lahes as well. NATURAL AND GENTLE FORMULATION: Amino acid and hyaluronic acid with Biotin ,these 3 main ingredients in combination with several vitamins, antioxidants, and nutrients that effectively stimulate stronger and faster hair growth.Biotin strengthens the weakened hair to support the growth and maintenance of natural and healthy hair. Hyaluronic Acid, which nourishes the roots of the eyelashes, improving their growth environment, and making them fuller. How to use: Make sure your face is clean from make-up and cream, and your eyes and lashes are dry. Apply a thin layer of the product on the root-line of your lashes. Use the applicator brush to apply a thin line from the inner to the outer corner of your lash line, at the very base of the lashes - almost like applying an eyeliner.