Home Cosmetic Science Talk Formulating Bad smell in shampoo formula

  • Bad smell in shampoo formula

    Posted by Yalcn on February 27, 2024 at 9:20 am

    First of all, good day,
    I have a simple shampoo formula I’ve been working on, but after a while the shampoo starts to smell bad. I wonder why ?Below is the formula

    Texsafon N70: %12

    Cocamide Dea: %1

    Cocamidopropyl Betaine: %3,5

    Polyquaternium-7: %2

    Glycerin: %1

    Polyquaternium-10: %0,1

    Essence: %0,3

    CIT/MIT: %0,1

    Citric Asit: 30 gr (Ph:5,5)

    Salt: %2.5

    • This discussion was modified 1 month, 3 weeks ago by  Perry44.
    PhilGeis replied 1 month, 3 weeks ago 3 Members · 6 Replies
  • 6 Replies
  • ketchito

    Member
    February 28, 2024 at 7:16 am

    What’s the type of smell you perceive? If it’s “fishy”, that’s normal due to the nitrogen-based ingredients you’re using.

  • Yalcn

    Member
    February 29, 2024 at 5:30 am

    Formüla

    Texsafon N70:%12

    Cocamide Dea:%1

    Betaine:%3,5

    Polikuarteniyum-7:%2

    Glcerin:%1

    Polikuartenium-10:%0,1

    Frange:%0,3

    Cıt/Mıt:%0,1

    Citric Acid:%30 gr

    Salt:%2,5

    Bad smell resembles sewer

  • ketchito

    Member
    March 1, 2024 at 5:58 am

    What’s the pH of your product? If it’s acid, check with your supplier if the fragrance is stable at that pH.

  • PhilGeis

    Member
    March 1, 2024 at 7:30 am

    Prob should check micro

  • Yalcn

    Member
    March 2, 2024 at 6:09 am

    <pre data-placeholder=”Çeviri” data-ved=”2ahUKEwjP6KK4xdWEAxXVBNsEHcjfDZMQ3ewLegQIBRAU”>Thanks for your answers, the pH range is between 5.5 and 6. Could this be due to “cocomide dea”?

    • PhilGeis

      Member
      March 2, 2024 at 7:34 am

      Add Sodium benzoate to ~ 2500ppm

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