Bee propolis block â?? natural antibiotic from the hive Strong natural bee propolis special smell,black color, block or paste status when get warmer. This substance is produced by bees mainly from plant resins and used by bees to seal the hive. In addition to a huge amount of ingredients that protect the insect colony from parasites, bacteria and viruses, propolis also contains several vitamins and minerals that will strengthen your immunity, give you energy and make you feel better. People using propolis treatment have noticed that it is particularly helpful in skin diseases, oral cavities and infections.