Castor Oil Mascara Daily Natural Eyelash Curl & Curl Beauty Gentle Moisturizing TreatmentOur castor oil mascara contains castor oil. It helps to lengthen eyelashes. The way to use it is very simple: every night after removing makeup and cleansing, keep your eyelashes clean and dry. Apply the primer from the inner corner of the eye outward to the upper lashes or the base of the eyebrows. (Use daily to let the eyelash serum work.) Eyelash growth after use, repair hair, promote hair growth.