This serum with its unique blend of ingredients gives visibly fuller,thicker and darker looking lashes in just 8 weeks(as tested by consumers).Use this serum every night for at least 8 weeks. Suitable for sensitive skin. Direction to use: Cleanse the eyes of any make-up and use the applicator to apply a thin line of No7 Lash Impact Lash Serum to the base of eye lashes along the upper and lower lash lines.this product can also be used on eyebrows.