Use the serum at night for duration of one week. The Cuticle Night Repair has a convenient pen system. When the back of the pen is turned, a drop of serum is released. The handy brush provides an easy and fast application to nails and cuticles. Using the brush, also massage the cuticles. Leave the serum on your bedside table so you don't forget to apply the serum before bed. In the morning, wake up with properly cared for and beautiful-looking nails!