Later that century, they found out that it could protect from pregnancy. Another good invention related to the condom in the 1500's was spermicides. It was discovered that by dipping the cloth sheets into a chemical solution and allowing to dry prior to use, this would kills sperm and protect against pregnancy. In the 1700's, some scientist made them out of animal intestines. In 1884, Goodyear and Hancock massed produced vulcanized rubber condoms.
Vulcanization is where crude rubber is turned into elastic material.
However it was not until the 1880's that latex condoms were produced. Latex comes from a milky fluid found in specialized cells, called lactiferous cells. Latex contains many varying proportions of gums, resins, tannins, alkaloids, proteins, starches, sugars and oils. Unfortunately, latex condoms were not in widespread use until the 1930's. 1.5 million condoms were being produced in the United States by 1935.