Hot process meltable base sweat problem

Discussion in 'Lye-Based Soap Forum' started by Cobelloy, Apr 17, 2019 at 3:48 AM.

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  1. Apr 17, 2019 at 3:48 AM #1

    Cobelloy

    Cobelloy

    Cobelloy

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    Hi, I've been trying out some meltable base formulas, but every one I've made sweats badly, literally dissolves itself in absorbed water.

    I live in a hot humid tropical climate which doesn't help (however indoors is usually cool and dehumidified)

    I started with a hot process coconut/olive oil soap with around 5% superfat, then dissolved it in a propylene glycol/glycerine/sugar mix

    pH is fine, around 8ish,

    I've tried using very little glycerine/sugar and no glycerine/sugar, I've also tried starting with a lard/coconut/olive soap and I've added a little castor oil too (all things I read that might reduce sweating) but the home made base still sweats, a lot.

    Where I live there is one place that sells ready made melt base that doesn't sweat (and it really doesn't sweat, at all), but when I requested the MSDS on it, it's mostly detergent, not soap.

    Things I haven't tried yet:
    Adding sorbitol instead of sugar
    Adding waxes or emulsifiers
    - will either of those make any difference to the sweating?

    I don't want to buy meltable base, I want to make it, does anyone know what I can add/leave out that will reduce the sweating, it's making me crazy
     
  2. Apr 17, 2019 at 4:07 AM #2

    cmzaha

    cmzaha

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  3. Apr 17, 2019 at 1:44 PM #3

    lsg

    lsg

    lsg

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    If you wrap the soap tightly with shrink wrap, you should have less sweating.
     
  4. Apr 20, 2019 at 12:04 AM #4

    Cobelloy

    Cobelloy

    Cobelloy

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    I've bought the book (not from Amazon, they suck at treating their employees like human beings, and I live in Australia where they don't have distribution ... yet), now just waiting for it to arrive
     
  5. Apr 20, 2019 at 1:09 AM #5

    Cobelloy

    Cobelloy

    Cobelloy

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    I've melted and mixed together all my not-quite-right melt base batches, the final product was a decent (but not clear) meltable soap, I found adding a little water to it made it much more pourable too, and 24h later there's no 'sweating' in the test soaps. Could be the extra water I added, some extra curing may have happened, or the combination of all the different batches might be some kind of magic, all I know is I have meltable soap that doesn't seem to sweat now...
     

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