I'm a huge salt bar maker and user. It's my favorite soap to use. I use it on face and body at least 3 time week or more. I've shared my recipe many many times here 80% CO, 15% Avocado oil, 5% Castor and 18% SF with 45-50% Salt. Like cmzaha I've been making them for 9-10 years now. I let mine cure 12 months or more. I make several batches a year. I have some customers that it's the only thing they will use. I use fragrance oils in my salt soap as I found EO's not to stick well at all in salt soap. Especially as long as I like to let them sit.