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Using Trex in place of coconut oil

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  • Using Trex in place of coconut oil

    Hi, I'm extremely new to soap making as a hobby and looking into finding out more about ingredients used in soap. I hear all the time that coconut fat is recommended for a good lather but I happen to have a huge chunk of Trex (solid vegetable fat, used as a replacement for lard in vegetarian cooking) in the fridge, which has a very similar texture and look to coconut fat. I would use the Trex for making shortcrust pastry but post-Christmas everybody is watching their waistline, so I was wondering if anyone has heard of/had any experience substituting it for coconut oil in soap-making.

    This is the recipe I'm going to use: notice that it says you can substitute stearin for the coconut oil. On this website, Crisco (a North American vegetable shortening) appears to have saponification values very similar to stearin:
    Last edited by thestitchandfold; 07-02-2013, 03:18 PM.

  • #2
    As I am not sure which vegetable oil Trex is made from - and their website doesn't help - unless it is listed on your soap calc you wouldn't know how much NAOH (Lye) to use

    Personally I would stick with oils that you know/can find out sap values for.

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    • #3
      I have just started making CP soap and could not find a solid pure vegetable oil apart from Crisp 'N Dry. I contacted the company and they told me its rapeseed oil and palm oil. of course as the conscientious crafter i wanted to make sure that the rape seed was not GM and that the palm came from a sustainable source. I've only made 3 batches and i have combined it with coconut oil and olive oil my first batch is now 3 weeks old and the ph from the lather is 8 which i think is pretty good, but dont know what else could happen to it in the next 3 weeks curing time. advice please or any comments.


      • #4
        Thanks Jane, that's sound and safe advice. Yes, I know Trex is not very clear on what "vegetable oils" they use; and that is most annoying. However, I was naughty (hee hee) and decided to experiment make half the amount stipulated in the recipe, using Trex in place of coconut oil. I used pH strips (Johnsons') to test my handmade soap (which is now about 4 days old) as well as another handmade soap I had purchased, Cidal soap and Imperial Leather soap. According to the pH strips, they are all around pH 9, which is promising. I will post in a few weeks time about how well the soap works.

        Well done for making sure that the palm was sustainable beesoaper - however being a newbie myself I cannot comment much further. I hope someone else can help you.