@ackosel said, "It got a heavy layer of soda ash on top, and was crumbly when I beveled the top edge."
I'm sorry it's taken me this long to see your postings abt salt soaps!
When I made soap more regularly I made salt soaps abt e/ 3 mos just to keep my oldest supplied!
The 1st time I made it, he was helping me & it was in a cardboard box. BIG mistake! We took too long to cut it & what everyone says about too hard to cut, & crumbles, it was all VERY real.
Once poured into individual molds they all developed that ashy powder on the surface, but it didn't seem to be chemically reactive to either my tongue or water, so i left it alone. I unmolded w/in 2 days most of the time, though I seem to recall that there was once I had to wait a week bc I was too sick, & my son too busy. Still, no harm was done.
Finally, to round out the details, this soap was mainly done in San Antonio TX, where it's mostly hot & humid. There was that exceptionally FREEZING
episode, but I didn't make salt bars that week. I never added colorants, a scent, or additives, as my son just wanted them to soothe his sensitive, acne-prone skin @ the time. His was being affected by stress, but regardless, the cure for the soaps was for no less than 8 weeks before I let him use the 1st one, & he loved it. This despite there being a water-softening system in the house (which I disliked but had to get used to).
Also, ALL the soaps developed a sort of "spiny"
aspect to their surface overall, along w/ the ashy powder. However it made no difference once the water hit them. It wasn't anything that affected his skin, or his friends', w/ whom he shared the soaps after a few weeks of his using them. They apparently remarked in how much better his face looked, & he told them abt "Mom's salt soaps". He stopped using/buying Neutrogena Acne something or other cleansing wash altogether. Again, I feel the need to apologize for not posting pics of said spiny
soaps. I thought I had some but I don't.
He's still hoarding the last of his stash from 2021 (I believe). But he's also not as stressed so he doesn't use them as often.
ETA: My soap recipes (
@Iluminameluna in SMF) are NOT salt bars, they're Soleseife, & the salt is no more than 25% of the total water wt, added to my warm distilled water so that'll dissolve completely, then THAT water cooled in the fridge before adding the lye (NaHO²). I do all my recipes in CP, just bc of my health, no other reason.
For those wondering, I once dissolved Pink Himalayan salt in my water, prepping for a recipe, & found the bottom of my container w/ a sediment i couldn't dissolve into the water. It was gray w/ tiny black grains that was very abrasive to my fingers. I came to find, through a bunch of Google searches, that it was silica, clay, & assorted debris. I kept the water, tossed the sediment, obv, but I wasn't in any hurry to buy any more of the HS. My son just got me the Costco salt. Cheaper & more readily avail. I don't sell my soaps so "label appeal" isn't my lingo.