Our Castor Oil Mascara contains castor oil. It helps to lengthen eyelashes. It is easy to use: keep your lashes clean and dry every night after removing your makeup and cleansing your face. Apply the applicator-head serum from the inner corner of the eye outward to the roots of the upper lashes or eyebrows. (Use daily to allow the lash serum to do its job.) Eyelash growth after use, repairs hair and promotes hair growth.