Bakelite was made from phenol, then known as carbolic acid, and formaldehyde. It was filled with carbolic acid (or phenol). The company later expanded into the production of coal tar, and carbolic acid (phenol). Commercially used creosote is often treated to extract the carbolic acid, naphthalene, or anthracene content. The earliest antibacterial soap was carbolic soap, which used up to 5% phenols (carbolic acid). The carbolic acid or naphthalene is generally extracted to be used in other commercial products. Gemelli also speculated that his wounds were kept open with carbolic acid. However, Lister decided to try carbolic acid. Lister's use of carbolic acid proved problematic, and he eventually repudiated it for superior methods. Luscious writing spiced up with injections of carbolic humour. He is credited with the introduction of carbolic spray to Aberdeen. The case concerned a flu remedy called the "carbolic smoke ball".