• Hair

  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 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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