According to Avon, not only is SSS a fine skin conditioner, it will also take tar off your car and repel insects ...
I don't remember all the things that Skin So Soft will do, but it was quite a list (twenty years ago)
And, no, Pepsi is NOT like Coke ... I can tell the difference, and prefer Pepsi, but it doesn't have the "cleaning" qualities.
Regarding VINEGAR for softening denim ...
currently, if I want to make totes or anything else out of my new denim yardage, I have been instructed to wash and dry it THREE times ... if I put a cup of vinegar into the wash on the first wash, will I still have to have a total of three washings and dryings to get it soft? <wave>