Most soaps contain alkali which break up the horny top layer of skin,
allowing water to penetrate more (as well as to escape). Although normal
skin renews this horny layer, repeated use of soap may weaken the repair
process. This can cause extreme scaling and dryness known as chapping.
However, glycerin soap is made up of mostly oils (coconut, palm, castor
- to name just a few), and will leave your skin moisturized and clean.