Don't sweat it...

handmade soap sweating

You may find the soap a little wet at times. A quality bar of handmade soap will tend to "sweat" in humid weather due to the high content of natural humectants. A humectant is a substance that absorbs moisture from its surroundings but not from the soap itself. The soap "sweating" does not affect any of the soap's abilities. Soap "sweating" demonstrates that the humectant agents in the soap are just merely doing their job of accumulating moisture from the air, leaving your skin moisturized.