I first thought it was Borax for president, too
I'm a newbie so my intention is NOT to spread mis-information, but today was the first day after a 30 day cure that I was able to use a cp batch that had very few hard oils and had a generous portion of canola oil and shea.
My hp batch from the same recipe was a waxy squishy mess, I rebatched it, but I added sodium lauryl sulfate to the cp batch (sls is a surfacant and a detergent, I
thought I needed for soap to bubble but I know better now)
well anyway the cp sls batch of previously squishy soap, was like cream cheese with power in it when I cut it 24 hours after pour (I added less than 1% sls) it sweated for about 2 weeks looking powdery, not like lye ash but cream cheese with powder.
I washed with it today, it is rock hard, creamy seems a good bar and just a teeny tineey more drying than my best recipe.
not to advocate sls at all, it is not needed in soap, just reporting what this additive did to my recipe.