These patches are designed to protect your lower lashes and the sensitive area around your eyes during LED lash extensions. 1 set = 1 treatment: 4 patches (2 for the left eye and 2 for the right eye). The patches are specially designed for LED lash extensions. They adhere well, isolating the lower lashes and the sensitive area around the eyes from exposure to LED rays. Thanks to their complex effect, the patches improve the condition of the skin, moisturize it, and make the procedure safer and more comfortable.