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Home Cosmetic Science Talk Formulating Formalin in leave on product as supportive preservative.

  • Formalin in leave on product as supportive preservative.

    Posted by Abdullah on December 29, 2021 at 2:23 am

    In the book cosmetic Microbiology it said: formalin is used 0.1-0.2% in shampoo.

    My question is 
    can we use this amount of formalin in leave on product like face and body lotion at pH 5 and 4.1?

    if no then how much formalin is safe in leave on product with phenoxyethanol and caprylhydroxamic acid or Piroctone olamine as supportive preservative? 

    In future i will use DMDM hydantoin but currently doesn’t have it available. Only formalin.

    Abdullah replied 1 year, 5 months ago 2 Members · 2 Replies
  • 2 Replies
  • PhilGeis

    December 29, 2021 at 8:40 am

    From EU directive
    Formaldehyde paraformaldehyde ►M51 (*) ◄ 0,2 % (except for products for
    oral hygiene)
    0,1 % (products for oral hygiene)
    expressed as free formaldehyde

    I’m not sure the status of formaldehyde ongoing but above is current language.

    Can’t address safety of a combination.

  • Abdullah

    December 29, 2021 at 9:02 am