Home Cosmetic Science Talk General DMDM hydantoin upper limit. 0.6% pure preservative or liquid with is 0.33% preservative?

  • DMDM hydantoin upper limit. 0.6% pure preservative or liquid with is 0.33% preservative?

    Posted by abdullah on September 25, 2021 at 4:07 am

    Is the maximum usage rate of DMDM hydantoin 0.6% of this 55% liquid blend or pure preservative which is 1.1% of this 55% liquid blend? 

    abdullah replied 2 years, 5 months ago 2 Members · 4 Replies
  • 4 Replies
  • PhilGeis

    Member
    September 27, 2021 at 4:35 pm

    That is upper limit — start with 2000-2500 ppm active 

  • abdullah

    Member
    September 28, 2021 at 1:17 am

    @PhilGeis 6000 ppm active preservative is the upper limit correct? 

  • PhilGeis

    Member
    September 28, 2021 at 7:17 pm

    No - that’s way too much

  • abdullah

    Member
    September 29, 2021 at 1:12 am

    @PhilGeis thanks

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