This past weekend, August 22 to be exact, marked a milestone in the sector: On Aug. 22, 1865, the first liquid soap was patented by William Sheppard. The formula flowed from mixing a pound of regular soap with 100 pounds of ammonia solution, then dissolving it in water to the consistency of molasses.  Today, liquid hands soaps represent an almost $700 million category in mass market outlets alone. Happi will cover the personal cleanser sector in November. You can read last year's upda...