Home Cosmetic Science Talk Formulating hydrolyed proteins and viscosity loss.

  • hydrolyed proteins and viscosity loss.

    Posted by natasha.acendra on February 24, 2025 at 4:50 pm

    Hi! I have been formulating a styling cream for all hair types, and I’ve had some trouble thickening the formula. I want it to be really dense, almost like a butter. However, I noticed that at the very end of my formulation, it loses a significant percentage of its viscosity. The last ingredients I add are hydrolyzed silk protein and hydrolyzed wheat protein, each at 1% of my formula (a total of 2% hydrolyzed proteins). I know that the proteins are causing the loss of viscosity, but has anyone else experienced this phenomenon? and if you have, what did you do? (i am aware that i can lower the concentration, but i would like it to stay the same)

    Thanks in advanced for any tips or suggestions!

    This is my formula

    Phase A

  • Water – 84.35%
  • BX-E10 Extract (Aloe Vera and Alnus arguta, Matricaria chamomille, Cucumis sativus L., Ginkgo biloba, Panax ginseng meyer) – 1.00%
  • Glucam P20 – 0.10%
  • Panthenol – 0.20%
  • Phase B

  • Polyquaternium-37 – 0.25%
  • BTMS 50% – 6.00%
  • Cetyl Alcohol – 2.00%
  • Silicone Alternative – 1.00%
  • Rice Butter – 1.00%
  • Argan Oil – 0.50%
  • Coconut Oil – 0.25%
  • Jojoba Oil – 0.25%
  • Phase C

  • Vitamin E – 0.10%
  • Silk Protein – 1.00%
  • Wheat Protein – 1.00%
  • Phenoxyethanol – 1.00%
  • Mix Phase A and heat until 70°C-80°C. Mix Phase B. Add phase B to really hot phase A. stir at high speed until combined. Let the mixture cool down. When the mixture is below 40°C add phace C.

natasha.acendra replied 3 weeks, 4 days ago 4 Members · 13 Replies
  • 13 Replies
    • ketchito

      Member
      February 26, 2025 at 7:15 am

      I asume both proteins are hydrolyzed. Can you check what’s the solvent? If they are both 1% solutions, I’d reduce them up to 0.1%.

      Phenoxyethanol can also cause a viscosity drop, just in case.

      • natasha.acendra

        Member
        February 26, 2025 at 10:48 am

        Yes! Both of them are hydrolyzed. The solvent is water, so i don’t see any problem in that. I guess i’ll try lowering percentage of the proteins and see if it helps.

        • Fedaro

          DIY formulator
          February 26, 2025 at 11:21 am

          If you don’t want to reduce the proteins, could you try increasing your thickener to compensate? Polyquaternium-37 is a pretty substantial thickener in my experience, you could increase it to ~0.5% and see if that helps.

          • natasha.acendra

            Member
            February 26, 2025 at 12:03 pm

            I did a test like that a while ago, but I saw no substantial difference between 0.5% and 0.25%. However, I had different ingredients back then, so I can definitely try it again.

            • Fedaro

              DIY formulator
              February 26, 2025 at 12:23 pm

              Try testing it in water first. I observed that a 0.5% concentration of Polyquaternium-37 in water remained fluid, while a 1% concentration formed a thick gel—thick enough that the mixture wouldn’t move even when the bottle was flipped upside down.

              • natasha.acendra

                Member
                February 27, 2025 at 10:56 am

                I tried the formula, increasing the Polyquaternium-37 to 0.5%, and the cetyl alcohol to 5% as well as reducing de hydrolyzed proteins to 0.25% each, here’s what I noticed after i used it:

                • It left my hair feeling quite smooth when WET but stiff when DRY.
                • It helped me detangle my hair.
                • When I blow-dried my hair, I could see smoke coming out of it.
                • When I curled my hair, it didn’t hold the curl as well as other times

                On another note, making these changes to the product itself helped A LOT with the viscosity problem I was dealing with. I could even say it was almost too thick—like when you turn a Blizzard upside down.”

                Do you have any idea what could be causing these negative effects after it dries on the hair?

                I think it might be the polyquaternium—that it could be sensitive to heat or that it forms a film around the hair, which evaporates when heat is applied. But i’m not that sure, it’s just a wild guess.

              • Fedaro

                DIY formulator
                February 27, 2025 at 12:06 pm

                For those questions, I will have to defer you to @ketchito 🙂

              • natasha.acendra

                Member
                February 27, 2025 at 4:04 pm

                Hahaha, Thank you!

              • ketchito

                Member
                February 28, 2025 at 5:56 am

                This is also a wild guess (too wild maybe), but perhaps PQ-37 because it can attract water, it making you retain more water than usual and tha’s the smoke you see when blow drying. That water-holding capacity might also have something to do with your curls. And the high thickness, a mixture of high amounts of fatty alcohols and PQ-37. Maybe you could reduce both PQ-37 and cetearyl alcohol…like 0.35% of PQ-37 and 3.5% of Cetearyl alcohol ?

              • natasha.acendra

                Member
                March 5, 2025 at 10:10 am

                UPDATE!

                I tried the changes you suggested, but I still have the same problems—there’s still smoke coming out when blow-drying the hair, and it doesn’t hold curls. However, I did another test and swapped P-37 for P-7, and it worked really well! I think it solved the problems I encountered before. I also made the changes Abdullah recommended, and I think I now have a pretty good formula.

    • Abdullah

      Entrepreneur
      February 26, 2025 at 8:25 pm

      Reducing BTMS by 2% and adding 2% stearyl alcohol will increase viscosity a lot

      • natasha.acendra

        Member
        February 27, 2025 at 4:09 pm

        Thanks! I do have some stearyl alcohol so i will do this version of the formula in the upcoming days and let you know how it works out!

      • natasha.acendra

        Member
        March 5, 2025 at 9:57 am

        UPDATE!

        I tried the change you suggested and it did wonders! Totally loved it! I took out the cetyl alcohol (on it’s own) completely, added 3% of stearyl alcohol, reduced the BTMS 50% by 2% and loved the results. It did wonders to the viscosity and left a really nice feeling to the hair.

        Thank you so much for the tip!

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