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  Stability testing

  Posted by Rimbaud16 on December 9, 2021 at 2:20 pm

  Hi chemists,

  Can you share with me good practices in testing the stability of cosmetic products? I want to broaden my knowledge at the theme so any answers are warmly received. I want to understand more about freeze/thaw cycles, because there is a lot of information about it in internet, but the number of cycles is always different, the temperatures are different. Is there any standard for freeze/thaw cycles? 

  At the moment I am using the following tests: 
  20 minutes at 45oC, then centrifuge it for 5 minutes at 6000 RPM on the day after making it.
  2 months at 40oC 

  Also what are some tests for water phase products only like shampoos, gels etc.? 

  OldPerry replied 2 years, 4 months ago 2 Members · 1 Reply

  • cleansing
  • emulsions
  • stability testing
• 1 Reply

• 

  OldPerry

  Member

  December 9, 2021 at 6:37 pm

  You can see this post on cosmetic stability testing

  And this webinar on stability testing too.

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