Lil-lets tampons expand widthways, with Tampax tampons expanding along their length. Dr. Earle Haas patented the first modern tampon, Tampax, with the tube-within-a-tube applicator. Tampax conducted medical studies in 1945 to prove the safety of tampons. In 1945, Tampax presented a number of studies to prove the safety of tampons. She is involved in a tour sponsored by Procter & Gamble's Tampax "Totally You Tour". She has appeared in television commercials for Coca-Cola, Tampax, McDonald's and Crunchie. Landecker earned her Screen Actors Guild card doing a voiceover for a Tampax commercial. She started the Tampax company and was its first president. The show featured a stripper, used Tampax in glass, and transvestite guards. Its development was led by the company's Tampax brand and feminine care group. From 1930s to 1940s Tampax chose sportswomen as their brand ambassadors. During World War II, Tampax produced wound dressings for the military.