16 for stearic is way too low. You basically need to add stearic acid to increase the lather stability and thickness. In my experience, stearic needs to be at least 55 to work.
I make CP and HP, using the same recipes for both, BUT (and this is a big but!), for CP my recipes have about a 33% lye solution. That would not fly with HP. So I simply add in more water for HP. As a rule, here it is: For CP I like to use a 33% lye solution which breaks down to about 1 part lye to 2 parts water. If my recipe calls for 1 pound of lye, I use 2 pounds of water.
For HP, I normally use about a 25% lye solution, unless I am adding milk (but milk is for another thread. ) For a 25% lye solution, you will use 1 part lye to 3 parts water. So, if your recipe calls for 1 pound of lye, you will use 3 pounds of water if you are doing HP. I've been making HP for about 15 years or more now (CP soap for many more years than that). I have made some real messes, LOL. But this rule of thumb is pretty simple and pretty fool proof. With that much water in your HP, you can cook the goonies out of it until you know it is done, without the worry of it drying out.
I'm one of those shavers, for what it's worth.
An updated version of Mitchell's Wool Fat is sold by Kent, and the ingredients are thus:
Sodium Tallowate, Potassium Stearate, Sodium Cocoate, Sodium Stearate, Aqua, Potassium Cocoate, Glycerin, Parfum, Alpha-Isomethyl Ionone, Hexyl Cinnamal, Limonene, Linalool, Hydroxycitronellal, Lanolin, Titanium Dioxide, Sodium Chloride, Sodium Gluconate, Sodium Silicate, Tetrasodium EDTA, Magnesium Sulphate, Tetrasodium Etidronate.
Frankly, it sounds like a lot of chemistry-set gobbly-****, but a closer examination yields some interesting and bizarre insight. First: there seems to be a mix of NaOH and KOH, which is bizarre, for The Fat is as hard as a rock. Next: the primary skin softening ingredient is a KOH Coconut Oil, not Lanolin, which tells me that this soap is misguided and just plain wrong. Also: there is a lot (>30%, approx) of both NaOH and KOH Stearic Acid, which when added to the tallow is a sheep-load of stearic acid.
My sense is that this soap probably performs well, but isn't really The Fat, and should be disregarded for producing lather in very poor taste. The real Mitchell's Wool Fat is a simple shave soap that wants care and attention when you use it, not when you make it, and in that way is elegant like a fine woman: confusing and somewhat odd, but ultimately worth the effort. My guess is that the ingredients around in the 1930's, when Mitchell first became concerned with beards and sheep, was tallow (probably from a sheep), Lanolin, a bit of Castor oil, and old-fashioned lye. A pinch of clay and a dash of glycerin never hurts, either. My humble suggestion is that you start there. You might also consider not judging it too harshly after a few weeks and a test lather. This soap needs to be used, and you must learn how your batch wants to treated. Does it get a soaking wet brush? Is the brush Boar or Badger? Do you use a scuttle? You should consider using one, to keep the soap hot, when some of its really beautiful qualities reveal themselves.
Enough said.
I do have a black Edwin Jagger bowl but have wanted to get a scuttle. I just haven't set my heart on one yet. You have a lot of great advice in here also. I will keep all of this in mind when making my shaving soap and hopefully it will lead to something quite wonderful.
I love my scuttle... nothing beats a hot lather shave on a cold British morning.
I also move between a single edge and a double edge depending on my mood, and though I'm really hooked on my MdC soap, I always have half a dozen others on the go.
Frankly, when I look at shave soap labels, I find that most of them use KOH and NaOH. It makes a softer soap that always makes a great lather. It's really a marketing decision more than anything. I don't mind fighting with a soap and learning what it wants in terms of water, heat or a brush. That's half the fun, to be honest.
I may have to get a Dirty Bird or a G20 Scuttle. Either one of those would be a beautiful addition to my den. I have seen someone do about a 40/60 mixture of NaOH to KOH respectively I think I may try that and see how it works out.
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