Beautiful pure white...from?

Discussion in 'Lye-Based Soap Forum' started by luluzapcat, Mar 25, 2020 at 7:36 PM.

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  1. Mar 25, 2020 at 7:36 PM #1

    luluzapcat

    luluzapcat

    luluzapcat

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    I made Zany's no-slime castile with an "unrefined olive oil"--the cheapest olive oil I could purchase in bulk from an organic grocery store around here.

    It came out a gorgeous pure white.

    Was this likely from the oil? From the "faux seawater" that is used in Zany's recipe? A combination?

    I'm particularly curious because I'm experimenting with rice bran oil, which has very a very similar fatty acid profile to olive oil. Bars I've made with that so far have been much darker, but they haven't been single oil soaps. I've added soy wax to those.

    I'll get to experimenting on single oil rice bran soon, but maybe some of you can save me a few steps...

    thanks!
     
  2. Mar 25, 2020 at 8:07 PM #2

    penelopejane

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    The white is from the olive oil. Pure olive oil soap gets whiter as it ages.
     
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  3. Mar 25, 2020 at 9:15 PM #3

    luluzapcat

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    Thanks penelopejane!

    Do we know what it IS about olive oil that gets so white? I'm curious about the chemistry of that...
     
  4. Mar 25, 2020 at 10:51 PM #4

    RogueRose

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    Do you have a link to this recipe? I'd like to check it out.
     
  5. Mar 25, 2020 at 11:03 PM #5

    KiwiMoose

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  6. Mar 26, 2020 at 12:11 AM #6

    Mobjack Bay

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    Just this past weekend I made a recipe that produced snow white soap. That’s the whitest soap I’ve made since I started making soap about a year ago. It’s whiter than my OO soaps. The recipe is only lard/tallow shortening, lard and coconut oil. A recipe with those same ingredients plus RBO turns out yellowish cream. I’m thinking the discoloration from RBO is due to the relatively high concentration of linoleic fatty acid.
     
  7. Mar 26, 2020 at 12:42 AM #7

    luluzapcat

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    Oh thanks--I had been thinking RBO and Olive oil had very similar fatty acid profiles, but I see now that Olive is 12% linoleic vs. RBO at 34%.
     
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  8. Mar 27, 2020 at 12:43 AM #8

    lenarenee

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    Its quite possible the oo you got is cut with cheaper oils like canola or sunflower. Adulterated olive oil is the norm, 100% pure olive oil is more rare.
    Those oils make a white bar.
     
  9. Mar 27, 2020 at 12:48 AM #9

    luluzapcat

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    That is interesting. I would say that despite the "no-slime" moniker I'm getting lots of slime after many months of cure, so seems like olive oil...unless canola and sunflower do that too. I'll research that one!
     
  10. Mar 27, 2020 at 1:28 AM #10

    cmzaha

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    When I do make OO soap I use the pure OO from Costco and it comes out pretty white. I just do not think all that much OO is adulterated without being labeled. I found the "No Slime" recipe to be just as slimy and no I do not get slime with Canola or Sunflower which I use one or the other in all my soaps, and mine ended up with DOS. So needless to say I was not impressed with the recipe. Sorry Zany.
     
  11. Mar 27, 2020 at 1:49 AM #11

    Mobjack Bay

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    I also think that soy wax might darken soaps, but I haven’t had a chance to try my soy wax recipe without RBO.
     

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