Home Cosmetic Science Talk Formulating Preservative % suggestion for this shampoo formula

  • Preservative % suggestion for this shampoo formula

    Posted by abdullah on April 23, 2021 at 6:19 am

    For this shampoo formula, what percentage of glyceryl Caprylate and Formalin can be used as effective preservative to keep the amount of Formalin to minimum?

    SLES   %9 as

    CAPB  %3 as
    Glycol distearate  %1
    PQ10  %0.3
    EO orange and lavender %0.3
    Tetrasodium EDTA  %0.2
    pH 5
    abdullah replied 1 year, 10 months ago 2 Members · 7 Replies
  • 7 Replies
  • philgeis

    Member
    April 24, 2021 at 11:20 am

    Probably none.  Glyceryl caprylate is a weak one and prob useless vs Gram  neg’s, the bugs you’d target with formaldehyde.  If you want that component, sure think a formaldehyde releaser would be preferable.

  • abdullah

    Member
    April 24, 2021 at 12:26 pm

    @PhilGeis thanks
    Formalin is available locally and very inexpensive. I thought if i make a preservative system around that it would be great.

  • philgeis

    Member
    April 24, 2021 at 1:31 pm

    Prob will be effective - and shampoos in the 1940’s-60 often used formaldehyde.  But it’ll scare today’s folks, and the odort maybe tough to cover.
    There are regulatory demands/consttraints on its use - labeling, limit etc. - and may bring some bad press. 

    Practical - wouldn’t go over 1000 ppm formaldehyde, prob less - see what works.

  • abdullah

    Member
    April 25, 2021 at 1:01 am

    @PhilGeis thanks

  • abdullah

    Member
    January 26, 2022 at 3:37 am

    PhilGeis said:

    Prob will be effective - and shampoos in the 1940’s-60 often used formaldehyde.  But it’ll scare today’s folks, and the odort maybe tough to cover.
    There are regulatory demands/consttraints on its use - labeling, limit etc. - and may bring some bad press. 
    Practical - wouldn’t go over 1000 ppm formaldehyde, prob less - see what works.

    @p@PhilGeis do mean 1000ppm free formaldehyde or formalin solution? 

  • philgeis

    Member
    January 26, 2022 at 12:04 pm

    Formaldehyde labeling would be required for formalin and in  many countries and EU for formaldehyde releaser.

  • abdullah

    Member
    January 26, 2022 at 12:57 pm

    PhilGeis said:

    Formaldehyde labeling would be required for formalin and in  many countries and EU for formaldehyde releaser.

    Thanks

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