Ivory has been producing their uniquely floating soap for the well over a century now and in that time they’ve become one of the most popular soap brands in the world. For many years, the company has maintained that the discovery of its trademark floating soap was a complete accident, but exactly how true is this? But the nail in the coffin came in 2004, when this accidental floating soap origin story was officially debunked. According to the archivist, a notebook from 1863 was found, in which a chemist working for P&G nonchalantly noted, “I made floating soap today. The first bar of Ivory floating soap sold to consumers happened in 1879, advertised from the beginning as the soap that floats.