Home Cosmetic Science Talk Formulating Cocamide DEA & Cocamidopropyl Betaine (Incompatibility)

  • Cocamide DEA & Cocamidopropyl Betaine (Incompatibility)

    Posted by tecnico3vinia on August 22, 2022 at 8:11 pm

    Hi there!

    I’m formulating a low-poo shampoo for the curly hair public but I think that there’s some incompatibility between Cocamide DEA (I’m using it as a thickener) and Cocamidopropyl Betaine in my system (I’m using it as a gentle/low foamer surfactant).

    When I add Cocamide DEA and CAPB the system becomes instantly cloudy. Does anyone know what can be happening? Has anyone ever experienced it? Any answer would be really helpful. I’ll put the formula down below:

    1. Water… q.s. to 100%
    1. PEG-150 Distearate - 1% (thickener)
    2. Cocamidopropyl Betaine - 15% (gentle and low foamer surfactant)
    2. Cocamide DEA - 5% (thickener)
    3. Polyquaternium-10 - 0,5% (conditioning agent)
    3. Plant Extract - 0,2% (marketing active)
    4- PEG-40 Hydrogenated Castor Oil - 3% (solubilizer)
    4 - Frangrance - 1%
    4 - Preservative blend - 1%

    Looking forward to hear from you.

    Kind regards 🙂

    ngarayeva001 replied 1 year, 10 months ago 4 Members · 6 Replies
  • 6 Replies
  • ketchito

    Member
    August 23, 2022 at 12:11 pm

    @tecnico3vinia CDEA and CAPB are compatible. Perhaps your issue can be related to the kraft point of your formula. Are those number in your formula the order of additio (I hope not)? You are actually using way too much CDEA. Perhaps you could increase your PEG-150 or include a polymeric rheology modifier (like Chrotix Liquid). 

  • em88

    Member
    August 25, 2022 at 7:29 am

    At what temperature are you adding them?
    I would decrease CDEA at 2-3%, and increase the quantity of PEG-150 Distearate to achieve the desired viscosity.

  • tecnico3vinia

    Member
    August 25, 2022 at 8:54 pm

    ketchito said:

    @tecnico3vinia CDEA and CAPB are compatible. Perhaps your issue can be related to the kraft point of your formula. Are those number in your formula the order of additio (I hope not)? You are actually using way too much CDEA. Perhaps you could increase your PEG-150 or include a polymeric rheology modifier (like Chrotix Liquid). 

    Thank you! I’ll test it again heating Cocamide DEA in water and increasing the PEG-150 Distearate! Hope it works! 🙂

  • tecnico3vinia

    Member
    August 25, 2022 at 8:56 pm

    em88 said:

    At what temperature are you adding them?
    I would decrease CDEA at 2-3%, and increase the quantity of PEG-150 Distearate to achieve the desired viscosity.

    In RT temperature, since I don’t heat the system. I think that if I heat the system, it will help on the incorportation of Cocamide! I’ll definetly try it. Thank you. 🙂

  • ketchito

    Member
    August 26, 2022 at 11:07 am

    @tecnico3vinia You don’t need heat to incorporate CDEA (unless you are using MEA or MIPA instead of DEA). You need to heat to melt PEG-150 distearate though.

  • ngarayeva001

    Member
    August 27, 2022 at 3:22 am

    I mixed these two ingredients in a transparent formula and had no issues. Having said that I also had an anionic surfactant (tried in several sulfate free formulas).

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