Why Is My Homemade Soap Sweating. Natural sugars including fruit purees and alcohol in cold process soap can super heat the soap and cause whats known as a soap volcano. Soap sweat or dew is caused by the glycerin and other water attracting compounds in the soap that concentrate water from the air onto the soap surface.
The lowest that I have gone is in the Summer Spa where I used 50 coconut. The soap batter may have been poured too soon. Natural sugars including fruit purees and alcohol in cold process soap can super heat the soap and cause whats known as a soap volcano.
The water beads up because of the waxy or water repelling components of soap.
Glycerin is a humectant that is a natural bi-product of saponification- the chemical reaction that produces soap. Because the soap is high in glycerin it will attract water which will show up as small droplets on the surface of the soap. This soap had pumpkin puree in it and the mini soapy eruption was relatively mild. To stop this process you will need to cure your soap.