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Home Cosmetic Science Talk Formulating Niacinamide Serum preservation


  • 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! 

    MarkBroussard replied 11 months, 2 weeks ago 4 Members · 3 Replies
  • 3 Replies
  • PhilGeis

    June 18, 2022 at 11:14 am

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

  • Abdullah

    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

    Professional Chemist / Formulator
    June 18, 2022 at 1:21 pm


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