Home Cosmetic Science Talk Formulating preservative for powder clay mask or scrub powder from herbs

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  • preservative for powder clay mask or scrub powder from herbs

    Posted by fethtahir on July 26, 2022 at 12:10 am

    Dear all,

    If i make powder products such as clay mask and herbs with rice powder as the base for scrub. should i add preservatives? if yes what is the best preservative for this kind of product. can i use sodium benzoat only? or i should add another powder form of preservatives? if yes can you recommend me which one?
    so far i got an information powder products dont need preservatives. 

    pls kindly help

    fethtahir replied 1 year, 9 months ago 3 Members · 3 Replies
  • 3 Replies
  • Symbiosis

    Member
    July 26, 2022 at 2:43 am
    As long as it’s truly dry you do not need to do anything, clay, spices, herbs.
    Sodium benzoate is mostly used in liquid foods.
  • PhilGeis

    Member
    July 28, 2022 at 7:04 pm

    Powders often require preservatives.  Consider please that they take up moisture under humid conditions such as a humid bathroom.  In this, the greatest risk is fungal growth.  Micro quality of your materials is also important - esp. the clay.
    Dynamics of pH will affect Nabenzoate efficacy and those are hard to anticipate.   Propyl parabens, chlorphenesin  might be some options, if needed.  Look at labels of similar products.

  • fethtahir

    Member
    August 28, 2022 at 9:29 am

    PhilGeis said:

    Powders often require preservatives.  Consider please that they take up moisture under humid conditions such as a humid bathroom.  In this, the greatest risk is fungal growth.  Micro quality of your materials is also important - esp. the clay.
    Dynamics of pH will affect Nabenzoate efficacy and those are hard to anticipate.   Propyl parabens, chlorphenesin  might be some options, if needed.  Look at labels of similar products.

    thank you very much Phil, sorry for my delay in reply because I  have issue to log in here.

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