• Formulating

  PRESERVATIVE FAILURE

  Posted by Wambs on November 8, 2019 at 4:05 pm

  I have received a Preservative efficacy fail on my formulation.  The part that failed was on mold and I used Preservative; Phenoxyethanol & Ethylhexylglycerin at 1%.

  I have since read that this preservative is weak on the mold side. Has anyone had a fail using this preservative combo, and what did you use in its place.  My formulation has Stealth-2 and Polysorbate 80 as emulsifiers and Iam now confused on what to replace it with. 

  Thanks in advance.

  Wambs replied 5 years, 4 months ago 2 Members · 3 Replies
• 3 Replies

• 

  raiyana

  Member

  November 8, 2019 at 4:21 pm

  I found an old discussion on this forum about polysorbate 80 and phenoxyethanol…
  https://chemistscorner.com/cosmeticsciencetalk/discussion/56/cosmetic-microbiologist-here-i-can-help-answer-your-germ-questions

• 

  Wambs

  Member

  November 8, 2019 at 9:40 pm

  @raiyana, thank you.

  Its very informative but I am even more confused now!  :confused:

  Does it mean I can add a small percent of Ethylhexylglycerin to the 1% Phenoxyethanol & Ethylhexylglycerin that am already using?

• 

  Wambs

  Member

  November 9, 2019 at 6:51 am

  Just realised I had not mentioned  the product that Iam making, It’s a body butter.

  Aqua
  Butyrospermum Parkii
  Polysorbate 80
  Steareth-2
  Fragrance
  Phenoxyethanol
  Helianthus Annuus seed oil
  Sodium Polyacrylate
  Dicaprylyl Carbonate
  Polyglyceryl-3 Caprate
  Ethylhexylglycerin

  Thanks

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