• Formulating

  Preservative system to replace Kathon

  Posted by befremovska on August 19, 2016 at 8:11 pm

  Hi,

  I want to remove the kathon from shower gel formula and substitue another perservative. In conjunction to the kathon, shower gel has phenoxyethanol. I know this alone is not enough.  

  One potential replacement  was Thor SBB, which is a mixture of benzyl alcohol, benzyl acid and sorbic acid. The benzyl alcphol content is to high for my liking so need to find another substitute perservative that will work well with the phenoxyethanol. 

  Can anyone suggest something that will work well phenoxyethanol?

  Thanks you.

  befremovska replied 8 years, 4 months ago 5 Members · 5 Replies

  • preservatives
• 5 Replies

• 

  OldPerry

  Member

  August 19, 2016 at 8:28 pm

  Methylparaben
  DMDM Hydantoin

• 

  belassi

  Member

  August 19, 2016 at 10:04 pm

  what is the pH?

• 

  Chemist77

  Member

  August 20, 2016 at 4:38 am

  @befremovska Although no issues in replacing the preservative, may I ask the reason for the replacement if you don’t mind. 

• 

  ozgirl

  Member

  August 21, 2016 at 10:26 pm

  I have had success with replacing Kathon CG with Euxyl K701 (Phenoxyethanol
  Benzoic Acid, Dehydroacetic Acid, Ethylhexylglycerin) for some of my products with pH <6 and no ethoxylated surfactants. I also have used Phenostat (Caprylhydroxamic Acid, Phenoxyethanol, Methylpropanediol) for a surfactant product with a pH just over 6. 

  Hope this helps.

• 

  befremovska

  Member

  August 22, 2016 at 12:15 am

  Thank you all for the suggestions.

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