HemaStop - 3 Pack Hema Stop can stop the bleeding of nails cut to close quickly and easily. Hema Stop is comprised of an astringent/styptic compound that is incorporated into a wax petrolatum substrate. The wax serves to seal the nail as well as hold the styptic in place. The wax also maintains product in a tidy, usable form with none of the problems associated with the powdered styptics.