Home Cosmetic Science Talk Formulating Advanced Questions Monopropylene glycol & DPG

  • Pharma

    Member
    February 16, 2020 at 9:07 am

    DPG is not an ‘official’ preservative but part of certain preservative blends. Many compounds similar to DPG do show a certain degree of preservation at least due to their water-binding activity and/or function as booster for other preservatives.

  • Bill_Toge

    Member
    February 16, 2020 at 9:10 pm

    1,2-glycols are most effective antimicrobial glycols, followed by 1,3; depending which isomer you use, DPG is anything between a 1,5- and a 1,7-glycol, so I’d wager it’s much less effective than MPG

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