Natural components are used to make this product. It is designed specifically to increase your lashes length, thickness, and strength. With Careprost eyelash serum, you can use it frequently without fear of experiencing any unfavorable side effects. To achieve the desired effects, you just need to apply it once or twice a week on your lashes. It may dry out your lashes if you don't apply it frequently. During your Careprost therapy, you may experience the following side effects: dark circles around your eyes, sunken eyes, drooping eyelids, skin tightness around the eyes, and abrupt development of eyelashes. When the therapy is stopped, these side effects usually disappear.