Home Cosmetic Science Talk Formulating Hair Will Cyclomethicone evaporate?

  • Will Cyclomethicone evaporate?

    Posted by kot on March 15, 2021 at 1:05 am

    Cyclomethicone is volatile, will it be feasible in products that are not in any kind of packaging, or will it evaporate?

    kot replied 3 years, 6 months ago 4 Members · 4 Replies
  • 4 Replies
  • Sponge

    Member
    March 22, 2021 at 2:42 am

    Please explain further.

  • OldPerry

    Member
    March 22, 2021 at 1:51 pm

    The heat of vaporization of Cyclomethicone is ~ 172 kJ/kg
    For comparison, the heat of vaporization of Water is ~ 2257 kJ/kg
    So, at a given temperature, pressure & humidity level, cyclomethicone will evaporate faster than water. 

  • PhilGeis

    Member
    March 22, 2021 at 5:33 pm

    Yes they will.   My former employer recieved inquiries from the US Navy re. condensation of silicones on interior submarine surfaces.  Traced to submariners’ use of antiperpsirant including siloxanes.

  • kot

    Member
    April 23, 2021 at 12:20 am

    @Perry , @PhilGeis Thank you.
    So it will be absolutely useless in shampoo and conditioner bars, as they stored open, right?

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