Gentler on skin than most soaps, making it a good choice for people who have particularly dry or sensitive skin. The lower pH helps the skin retain its natural moisture. Since glycerine is hygroscopic, it may also help moisturise the skin by attracting water from the air.
In spite of its benefits, glycerine soap also has several drawbacks. It generally does not lather up as well as other soaps and may dissolve if it is left in water or attracts too much moisture from the air.
Glycerine soaps are considered hypoallergenic, meaning that they are less likely to cause allergies in most people.