Strengthen your lashes with dhcs eyelash tonic a nourishing gel treatment that acts as a primer to your mascara and a conditioner on its own the eyelash tonic is rich in fortifying botanicals including ginseng aloe and swertia japonica which coat each lash from root to tip to help prevent breakage for a more robust lash line an easy to use applicator helps to distribute the gel more evenly creating strong lush fuller looking eyelashes ew