Hi, I am fairly new at soap making and have a big problem, I have tried several different batches of soap using hot process. All my soaps seem really soft. Not sure why. I have used recipes from different places to try and not sure what I am doing wrong. What can make soap harder? I use FCO and have not used tallow, I tend to go with no animal fats, if this matters. I have let the bars sit for over a month after cutting and they are still really soft. ?? Any ideas would be appreciated.