This high-performance nightly treatment by Estée Lauder is formulated to revitalize and condition both your eyelashes and eyebrows. Designed to work while you sleep, it supports the natural appearance of fuller, stronger-looking lashes and well-defined brows. Utilize this serum daily on clean brows and lashes to enhance their natural beauty and texture over time. It integrates seamlessly into your evening beauty ritual, providing targeted nourishment where it is needed most.