Home Cosmetic Science Talk Formulating Niacinamide Serum preservation

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  • Niacinamide Serum preservation

    Posted by Rimshah on June 18, 2022 at 9:21 am

    Hello members! This formula has been formulated by my manufacturer, it also has a few botanical extracts which are not mentioned here. He is saying shelf life is 3 years. Do you think that preservatives are enough in this niacinamide serum? Thanks! 

    WATER、TREHALOSE、NIACINAMIDE、METHYLPROPANEDIOL、BUTYLENE GLYCOL, SODIUM HYALURONATE、HYDROXYACETOPHENONE、GLYCERIN、1,2-HEXANEDIOL
    markbroussard replied 1 year, 8 months ago 4 Members · 3 Replies
  • 3 Replies
  • PhilGeis

    Member
    June 18, 2022 at 11:14 am

    Prob not - on what data does he claim 3 year stability?

  • abdullah

    Member
    June 18, 2022 at 11:17 am

    What is the pH of product, percentage of HYDROXYACETOPHENONE、GLYCERIN、1,2-HEXANEDIOL, METHYLPROPANEDIOL、BUTYLENE GLYCOL, names of those other extracts and package type?

    If pH is ≤5 and these ingredient in high amount and good package that may be enough preservative. 

    Wait for experts like PhilGeis to give you better comments. 

  • markbroussard

    Member
    June 18, 2022 at 1:21 pm

    @Rimshah:

    That’s a pretty weak preservation system.  You would benefit from the addition of a Chelating Agent + Phenoxyethanol. 

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