Home Cosmetic Science Talk Formulating What’s wrong with this leave-in conditioner formula (cetrimonium chloride)

  • What’s wrong with this leave-in conditioner formula (cetrimonium chloride)

    Posted by ccchem on February 18, 2020 at 10:30 am

    Hello 

    I need some help figuring out what’s wrong with this formula. It makes for a watery leave in conditioner. I am OK with the viscosity, but it has white particles in it.

    This is the formula given to me by the formulator 

    water 86.55%
    glycerine 3%

    Sweet almond oil 2%
    Jojoba oil 2%
    Vitamin E 0.5%
    Cetrimonium chloride 0.25%
    Cetostearyl Alcohol 4%
    Sodium Benzoate 1.5%
    Citric Acid 0.2%
    I would like to maintain the watery texture. 

    Thank you 

    ccchem replied 5 years, 2 months ago 3 Members · 3 Replies
  • 3 Replies
  • ngarayeva001

    Member
    February 18, 2020 at 12:21 pm

    If you paid for this formula you should demand a refund. Here is what is wrong with this formula:

    1) Hair products do not need oils. All the oils you see in commercial products are added at a min amount for label appeal. Cut oils to 0.5% or even less. As long as you have a drop there you can say it on the label.
    2) Too much of vitamin E. You don’t need more than 0.2%
    3) 0.25% of cetrimonium chloride isn’t enough to emulsify 8.5% of oil. Keep it for conditioning and add a non-ionic emulsifier. Ceteareth-20 will do (GMS+PEG-100 Stearate is another option). How much depends on the amount of oil and Cetearyl alcohol you are going to keep.
    4) In a properly emulsified product, 4% of Cetearyl alcohol won’t stay liquid. Cut it to 2% if you want to maintain low viscosity (try 1%, 1.5% and 2% and see what works for you).
    5) Sodium benzoate alone is not enough to preserve this product. It’s not a broad spectrum and it requires low pH. 
    6) They should not suggest a precise amount of citric acid. Citric acid is qs to pH of XYZ. In this case, your pH should be not higher than 5 because of your preservative but I think you should replace it with something reasonable. At least Euxyl PE 9010.

  • OldPerry

    Professional Chemist / Formulator
    February 18, 2020 at 1:31 pm

    I would add that you shouldn’t use more than 0.25% Cetrimonium Chloride for a leave-in conditioner. 

  • ccchem

    Member
    February 19, 2020 at 1:44 pm

    Thank you very much for this feedback, it’s very helpful. I did not pay for the formula so there’s a possibility that they did not disclose the complete formula.

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