Home Cosmetic Science Talk Formulating association phenoxyethanol et acide dehydroacetique and alcool benzylique

  • association phenoxyethanol et acide dehydroacetique and alcool benzylique

    Posted by imanebouziane on November 2, 2022 at 8:56 am

    hi
    is ‘it possible to associate the phenoxyethanol  with alcool benzylique and dehydroacetique in large batches  

    Nyatou replied 1 year, 11 months ago 3 Members · 7 Replies
  • 7 Replies
  • PhilGeis

    Member
    November 2, 2022 at 10:22 am

    Please describe the formula context.

  • imanebouziane

    Member
    November 2, 2022 at 6:32 pm

    It's a moisturizer cream containing :

    water
    EDTA
    phenoxyethanol 0,4%
    urea

    glycerin
    xanthan gum

    Shea butter
    céteareth 20
    CETYL ALCOOL
    stearic acid
    olive oil
    squalane
    calendula oil

    panthenol
    vit E
    EO
    COSGARD( dehydroacetique and  alcool benzylique)0.6%
    do you think that the preservative system is effective? sufficient?

  • PhilGeis

    Member
    November 3, 2022 at 1:30 am

    what is pH?

  • Nyatou

    Member
    November 5, 2022 at 11:19 pm

    I would like to know as well. I am working on a hair cream pH 5. I am using benzyl alcohol and dehydroacetic 1%. Is that enough for an effective preservative system? I have seen in the market other hair creams with only Cosgard as Preservative.
    Ingredients are  aqua, mango butter, sweet almond oil,  lactic acid, aloe vera and BTMS.

    Shall I add a bit of phenoxyethanol  and EDTA to boost the system or just leave it like that? What %?

    Thanks in advance :blush:

  • imanebouziane

    Member
    November 7, 2022 at 3:46 pm

    PhilGeis said:

    what is pH?

    PH IS 5,5

  • PhilGeis

    Member
    November 7, 2022 at 5:21 pm

    Think 1% DHA is excessive and beyond solubility limit.  not sure you need benzyl alcohol if phenoxy 0.3% and EDTA 0.1%.  

  • Nyatou

    Member
    November 7, 2022 at 7:39 pm

    @PhilGeis is it 1% of Cosgard 221 too much in the hair cream you mean? What I would like to know is  if that’s enough for a good preservative system being pH 5 and 0’1% edta. 

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