Home Cosmetic Science Talk Formulating Phenoxyethanol Paraben blend

  • Phenoxyethanol Paraben blend

    Posted by Abdullah on May 14, 2021 at 11:11 am

    1. Which Paraben in combination with phenoxyethanol has best preservative effect specially for Shampoo?

    2. At what percentage can methylparaben and ethylparaben be solubilized in phenoxyethanol?

    3. Is there any incompatibility between parabens and SLES or APG?

    4. What percentage of phenoxyethanol/Paraben blend is enough to protect this Shampoo formula?

    Water, SLES, CAPB, APG, Glycol distearate, guar gum, polyquaternium 10, EDTA, lavender essential oil. 

    Abdullah replied 3 years, 2 months ago 3 Members · 11 Replies
  • 11 Replies
  • PhilGeis

    Member
    May 14, 2021 at 11:08 pm
  • Abdullah

    Member
    May 15, 2021 at 12:16 am

    @PhilGeis thanks 
    Unfortunately this blend isn’t available here. I have phenoxyethanol in stock as the MOQ of each Paraben is 25kg i can only afford to purchase one of them right now to use with phenoxyethanol. 

    So any suggestion about which one to purchase! 

  • PhilGeis

    Member
    May 15, 2021 at 11:27 am

    Shampoo - then methyl parabens.  But I’m not offering that it will be effective.  This you must determine.

  • Abdullah

    Member
    May 16, 2021 at 3:47 am

    @PhilGeis may i ask why you are not offering that it will be effective?

    Also what ratio of phenoxyethanol and methylparaben do you recommend? 

  • ngarayeva001

    Member
    May 16, 2021 at 10:41 am

    It has never came to my mind to use phenonip in shampoo. Probably because most of surfactant products I make are cold process. No one stops me from heating it though. I  will try this!

  • PhilGeis

    Member
    May 16, 2021 at 10:53 am

    Abdullah said:

    @PhilGeis may i ask why you are not offering that it will be effective?

    Also what ratio of phenoxyethanol and methylparaben do you recommend? 

    Efficacy can not be presumed.  One must demonstrate by challenge testing. I’m not recommending the stuff - my answer was in response.  If one must use a paraben in a shampoo, use methyl.

  • Abdullah

    Member
    May 16, 2021 at 1:16 pm

    @PhilGeis got it.
    Wht Paraben do you recommend is Lotion and cream in combination with phenoxyethanol and hydroxyacetophenone? 

  • PhilGeis

    Member
    May 17, 2021 at 12:23 pm

    Methyl and propyl is a classic combination - with EDTA and a preservative targeting Gram negative bacteria,

  • Abdullah

    Member
    May 20, 2021 at 8:23 am

    @PhilGeist thanks

    At what ratio methyl to propyl? 
  • PhilGeis

    Member
    May 22, 2021 at 12:24 pm

    2:1 - often 2000/1000 ppm.

  • Abdullah

    Member
    May 24, 2021 at 1:18 am

    @PhilGeis thanks

Log in to reply.