• General

  preservative for liquid soap done with KOH

  Posted by elias on March 18, 2014 at 4:49 pm

  do i need a preservative for liquid soap done with KOH?

  elias replied 10 years, 1 month ago 2 Members · 6 Replies
• 6 Replies

• 

  MakingSkincare

  Member

  March 18, 2014 at 5:43 pm

  what pH is it??
• 

  elias

  Member

  March 18, 2014 at 5:45 pm

  about 8-9

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  MakingSkincare

  Member

  March 18, 2014 at 5:51 pm

  Yes you will need to add a preservative.  Most preservatives have pH restrictions so you will need to choose one which can cover pH9.  You will find reviews of 27 preservatives and the pH ranges for them here: -

  
  

  http://makingskincare.com/preservatives/
• 

  elias

  Member

  March 19, 2014 at 12:54 am

  witch one suitable if i add to soap polysorbate 20?

   
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  MakingSkincare

  Member

  March 19, 2014 at 7:03 am

  Elias - It’s all detailed in the above webpage.

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  elias

  Member

  March 19, 2014 at 10:47 am

  Thank you

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