How do you make your eyelashes thicker?

after reading and studying many of the posts online, i have found that applying castor oil to your lashes each night and washing it off in the morining helps to further your lash growth. Another little trick that is appearing to work for me is to apply a clear nourishing mascara each night before bed and again in the morning after cleansing you face and before applying your makeup also helps to lengthen and thicken your lashes.