Glycerin soap we melt and add color and aroma in. Went almond this time and mixed in some goat milk glycerin this time. She was not happy with a hand soap I picked up that was a glycerin soap and wanted to switch it out. After a short tutorial that I think I found on Showerheadly.com we knew exactly how to do it well, it was great fun too. I suggested we cut the bars lengthwise for ease of use and she agreed. I even tried one in the shower, but the lather does not have the power. I smell darn good though.