Home Cosmetic Science Talk Formulating Guar Hydroxypropyltrimonium Chloride

  • Guar Hydroxypropyltrimonium Chloride

    Posted by Paprik on February 13, 2023 at 1:29 pm

    Hello guys,

    how are you processing GHPC? I am having problems with proper hydration I guess?

    Please see attached picture - doesn’t matter how long I mix it for, it still has some “sediment” on the bottom of the beaker after some time. It is not really like gel, not really like powder. Something between if you will? The picture has been taken after a little swirl.

    So far I used GHPC in conditioners (emulsion) so I could not notice this, but tried to use it in a shampoo and that’s where the problem is.

    I used medium shear for this one, mixed it for 10 minutes at neutral (distilled water) pH and after acidify it with citric acid (to pH 4-5) and mix again for another 10 - 15 minutes. Still, the next day there is this sediment. [But tried to acidify immediately also after adding GHPC into the water].

    It my GHPC bad maybe? Or is it normal that it does not fully hydrate and it should be suspended/stabilized in the shampoo?

    • This discussion was modified 1 year, 2 months ago by  Perry44.
    Paprik replied 1 year, 2 months ago 4 Members · 5 Replies
  • 5 Replies
  • Paprik

    February 13, 2023 at 1:30 pm

    It looks like the photo is not showing?

    Am I doing something wrong @thejoggler ? If I try to edit my post the photo is there uploaded.

  • ketchito

    February 13, 2023 at 8:38 pm

    I usually don’t let the guar hptc solution for too long before proceeding with the manufacture. Keep in mind that it’s not a soluble polymer, so even when hydrated, it can settle when there’s nothing to keep it in suspension. A different story happens when the surfactants come in, especially the anionics with which guar hptc forms a coacervate that then it’s dissolved by the extra surfactant. There you don’t have settling.

  • Abdullah

    February 13, 2023 at 9:04 pm

    Do you add anything else before cationic guar?

    There is two types of cationic guar.

    1. Add it first ingredient in water, mix for 1 minute, ph will increase, reduce the pH to 5 and it will hydrate and viscosity will increase. As citric acid is not very compatible with cationic surfactants I don’t think it is the best option to reduce pH of cationic guar too( it is just my opinion). After i added and mixed cationic guar i add CAPB. It reduces the pH and hydrated the cationic guar too. After that i use citric acid.

    2. Some types of cationic guar need to be mixed with water for 15 minutes and it will hydrate without adjusting pH.

    Can you share the COA of your cationic guar.

  • Perry44

    February 13, 2023 at 10:21 pm

    The image is showing now

  • Paprik

    February 14, 2023 at 2:39 pm

    Thanks a lot guys. This is kind of what I wanted to hear.

    The reason why I asked is because I did make a shampoo with GHPC, but found some gelatinous bits in it after some time. And wasn’t sure if it was GHPC or something else. I wanted to investigate and test each ingredient and this happened. But if it’s normal (without anionic surfactant) it is a good sign my GHPC is just fine 😀

    I did try it with Sodium Lauryl Sulfoacetate yesterday (Water, 6% SLAS, 0.3% GHPC and 5% CAPB, Preservative) and waiting for bubbles to go away and validate the product. Will be in touch if something bad happens 😀 🤓

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