• Formulating

  preservative

  Posted by Michelle76 on September 14, 2020 at 9:02 am

  Hi, I have a few doubts about preservatives. I know they can be active against bacteria fungi/mould and yeast. Most of the preservatives are effective against only bacteria. what kind of product yeast and mols can spoil?
  And what can I use to cover everything when I have a preservative that cover only bacteria?
  I am so confused. Thank you in advance for your help.

  chemicalmatt replied 3 years, 8 months ago 2 Members · 1 Reply
• 1 Reply

• 

  chemicalmatt

  Member

  September 14, 2020 at 4:43 pm

  Molds & yeasts are more prevalent adulterants than bacteria in many formulations, e.g. clay masks, face primers. The best antifungal agents are PARABENS, of course, but that word scares so many people its a non-starter. I recommend including iodopropynyl butylcarbamate (IPBC), usually sold in a solution in phenoxyethanol. Applicable globally at 0.01% w/w if memory serves. 

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