Glycerin soap is gentler on skin than most soaps, making it a good choice for people who have particularly dry or sensitive skin. According to Vermont SoapOrganics, glycerin soap also has a lower pH than other soaps, which helps the skin retain its natural
What is glycerin?
Glycerin, or glycerol, is derived from plant-based oils. It also occurs naturally in fermented goods, such as beer, wine, and bread.
This ingredient was "accidentally" discovered in 1779 by a Swedish chemist heating up an olive oil mixture. He identified the resulting fat as glycerin.