Nope. Not me. I've only been making soap since April. My first soaps were great. They made my skin feel great. My skin problems literally disappeared before my first bar of soap did. But soon after using them, my shower clogged up. Turns out I have hard water. Soap makes scum in hard water. Did your research tell you that? Mine sure as heck did not! I had to buy a huge bottle of drain cleaner and a snake to clean out the shower drain. Then I discovered what a "chelant" is and how to use it. Now, I add it to all of my soaps. However, I still have 4 months worth of soaps that do not have a chelant in them. So, I have to warn my "testers" that the soap will cause scum if they have hard water. I also tell them only use the soap a few times to get an idea of how it lathers, makes their skin feel, etc., and then toss it. I don't want to knowingly be responsible for a bunch of bad plumbing. So, all the research I did before I ever made my first batch of soap did not prepare me for the real world of soap. Sorry. I don't mean to sound mean or argumentative, but think about it, did what you learned in high school really prepare you for life? No different with learning about soap vs making soap.