Several weeks ago, I acquired a salt soap and placed it at a stainless steel kitchen sink for testing purposes. For the first few days, there was not a problem with the soap, but I noticed that the sink started to have mineral build up in the sink and around the place where the soap sat and there was a chalky feel all over the sink that had not occurred before. Now, I don’t know if the build up is a combination of our hard water and the soap or just the soap. If I had used it at a white sink or bathtub, would I have noticed the build up? Probably not at first, but I would have noticed the chalky texture of the build up after while.
For those of you making salt soaps, are you mostly looking for abrasive textures, or are you finding the salt adds something to the soap?
For those of you who have used salt soaps, are you using in a softened water situation? If not softened, is your water hard? How hard? If you soften, how is it done? Reverse osmosis? De-ionized? Ion exchange with salt water flush?
So, let’s start a discussion about salt soaps!