Care for your lashes & eyebrows with the Embryolisse Lashes & Brows Booster Green. The serum offers daily care to help strengthen & thicken the look of lashes & brows. Infused with castor oil, the formula is designed to enhance the look of lashes & brows after 28 days of use. Apply twice daily to help lengthen the look of lashes & promote thicker, fuller-looking brows. Fragrance-free. Dermatologically & ophthalmologically tested.