Hi Rachel! That’s very interesting that you made the same recipe and one started sweating and the other didn’t. Sometimes, temperature changes cause sweating during gel phase. Were you working in a really cold room? The soap heats up quite a bit when it goes through gel phase in the hours after it’s first poured into the mold. So, if that hot surface meets really cool room temp, then sweating can occur. (Sort of like when something cold is taken from the refrigerator & meets the warm air from your house and condensation builds up. Only reverse in this case.) :) Or, conversely, was his soap sitting in the direct sunlight and perhaps yours wasn’t? Salt bars also sometimes sweat, but unless you added salt to the recipe, that’s not a factor. Since you wrote this a few days ago, is the soap still doing that, even after unmolded & cut? Are you in a high humidity area? If so, you might need to place them near a dehumidifier or let a box fan gently blow over them a few days, to help dry them out. Keep me posted on how they turn out!