Home Cosmetic Science Talk Formulating Thickening agents

  • Thickening agents

    Posted by Tauriel on January 11, 2019 at 1:25 pm

    I’m making a shampoo with a soapberry concotion. I planned on using xantham gum to thicken since the idea is to make a shampoo with no other surfactant. I heard xantham gum is incompatible with some preservatives. If I’m using caprylhydroxamic acid as the preservative, should I use a different thickener? Guar gum, perhaps?

    belassi replied 4 years, 2 months ago 10 Members · 13 Replies
  • 13 Replies
  • KellyMoonValley

    Member
    February 4, 2019 at 1:48 pm

    Tauriel - Did you end up using guar gum?  I am concerned about separation and was wondering if you have noticed any.

  • Tauriel

    Member
    February 7, 2019 at 12:11 am

     Hi Kelly
    Ooops! I had some unexpected things come up. I did not get around to finishing the project! :/ From what I’ve read on one of Perry’s blogs(If you’re reading this, I find your blogs very informative btw), xanthan gum is incompatible with some preservatives. I do not know exactly how incompatible and also do not know which preservatives he was referring to.
    What did you mean by separation, though? If it’s only water based, I don’t see why there should be separation…… Is there perhaps an oil phase? I’m an amateur so, I could be missing something here… I ‘ll be sure to update when I get results.

  • smok

    Member
    February 8, 2019 at 5:21 pm

    whu you do not use salt?

  • Tauriel

    Member
    February 8, 2019 at 10:47 pm

    Hello smok,
     I hadn’t thought of salt. I have only ever used salt to thicken liquid soap and it does work nicely there. Does salt thicken an acidic solution?

  • Tauriel

    Member
    March 23, 2019 at 5:36 pm

    Hello all,
    So, I tried salt and turns out it did not thicken. I added about 3-4% salt to the soapberry infusion (which I had previously prepared) over low heat. I stirred for about 10 minutes over low heat and it still hadn’t thickened. I turned off the heat, let the mixture cool, and when I went to check back later, it still hadn’t thickened. I have never had this problem when thickening liquid soap. What did I do wrong? 
    The ingredients in the mixture are: soapberry, water, glycerin(5%), and the salt.

  • smok

    Member
    March 24, 2019 at 6:45 pm
    sory i have a bad english
    but when add salt  duliete in wataer you mixt the lotion until you get texture
  • microformulation

    Member
    March 24, 2019 at 6:53 pm
    Not every surfactant system thickens with salt. You have to research the chemical designation/class of your surfactant. Also, when we use the salt curve we go far less than 3-4% Salt. If your surfactant system is going to thicken, it will at a lower level. You may have “crashed” the salt curve.
    Soapberry is difficult to thicken and in my experience not the best primary surfactant.
  • Quimico

    Member
    April 19, 2019 at 6:51 pm

    Tauriel Use EDTA 0.5% for preservative and salt for thickner.
    Xanthan gum is not easily dissolved

  • em88

    Member
    April 20, 2019 at 8:28 am

    Quimico said:

    Tauriel Use EDTA 0.5% for preservative and salt for thickner.
    Xanthan gum is not easily dissolved

    EDTA as preservative? 

  • sven

    Member
    April 20, 2019 at 8:55 am

    been asking that myself??

  • ngarayeva001

    Member
    April 20, 2019 at 12:00 pm

    Xanthan is very easy to dissolve. It just has to be suspended in glycerin or oil.

  • emanuelsf

    Member
    January 17, 2020 at 7:39 pm

    You can try increasing viscosity with maltodextrin

  • belassi

    Member
    January 17, 2020 at 9:45 pm

    soapberry and xanthan gum … sounds horrible, I can just imagine the vile snotty sensorials.

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