I used soap. Actually, I tried out my first ever salt bar. 100% coconut oil, 20% SF and 25% pink Himalayan salt. Today is the "ready" day. I made it six weeks ago. Well, it will be six weeks in about 10 hours. I used it on my EXTREMELY itchy poison ivy (thanks Shredder!). It felt sooooooo good. My skin feels incredibly soft and not at all dry. Thanks to the Benadryl, it also doesn't itch anymore.