I love Crunchy Betty, too! However, in one part of her blog she talks about how she learned that premixing vinegar and baking soda does not add to a product's "power," since that chemical reaction results in a LOT of water and little bit of sodium acetate. It's too bad that she didn't go back through her other recipes and mention that in all of them. Here's the page where she talks about the chemical mix:
http://www.crunchybetty.com/diy-101-baking-soda-vinegar-not-so-much
I'm interested in trying the homemade soft scrub recipe (well, minus the vinegar, or I'll spritz with vinegar after I smear it all over the shower!) but I have been using Barkeeper's Friend, both the powder and the soft scrub, which I find to be very mild and effective for removing hard water scale and soap scum (Chicago has pretty hard water). The active ingredient is oxalic acid, which can cause skin irritation and peeling--but I got that once when I used baking soda without gloves so I personally don't consider that a knock against it.
A friend who loves my salt soap informed me that the salt soap develops a scum faster than my regular soap (she has a soap shelf in her shower that gets hit pretty well by the spray and eventually has a dribble of soap scum going down the shower wall). I wonder if the salt in the bar helps it to create a mineral scale surface for the scum to cling to? Or does the soap dissolve under running water faster because of the solubility of salt? She said she doesn't care about the scum, she just thought it was interesting.
http://www.crunchybetty.com/diy-101-baking-soda-vinegar-not-so-much
I'm interested in trying the homemade soft scrub recipe (well, minus the vinegar, or I'll spritz with vinegar after I smear it all over the shower!) but I have been using Barkeeper's Friend, both the powder and the soft scrub, which I find to be very mild and effective for removing hard water scale and soap scum (Chicago has pretty hard water). The active ingredient is oxalic acid, which can cause skin irritation and peeling--but I got that once when I used baking soda without gloves so I personally don't consider that a knock against it.
A friend who loves my salt soap informed me that the salt soap develops a scum faster than my regular soap (she has a soap shelf in her shower that gets hit pretty well by the spray and eventually has a dribble of soap scum going down the shower wall). I wonder if the salt in the bar helps it to create a mineral scale surface for the scum to cling to? Or does the soap dissolve under running water faster because of the solubility of salt? She said she doesn't care about the scum, she just thought it was interesting.