Home Cosmetic Science Talk Formulating General What do you think about these preservative?

  • What do you think about these preservative?

    Posted by sandydijon on December 16, 2015 at 11:16 pm

    Gluconolactone, sodium benzoate, calcium gluconate

    It’s new to me. any feedback or reviews regarding it? Just general opinion.

    Chirag replied 8 years, 1 month ago 6 Members · 8 Replies
  • 8 Replies
  • OldPerry

    Member
    December 17, 2015 at 1:32 am

    You can read more about preservatives here.


    My opinion is the most effective preservation systems use parabens and formaldehyde donors. The ones you listed aren’t nearly as effective.
  • sandydijon

    Member
    December 17, 2015 at 4:14 am

    Thanks. You got a really nice article.
    So do you think
    mso-fareast-font-family:SimSun;mso-font-kerning:14.0pt;mso-ansi-language:EN-US;
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    mso-fareast-language:EN-US;mso-bidi-language:AR-SA”>Polysorbate 20 (not really water soluble and needs an emulsifier, I’m a bit concerned)
    or
    1%
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  • belassi

    Member
    December 17, 2015 at 5:55 am

    I’ve used 0.5% potassium sorbate at pH 5.5 in shampoo for years with no problem. Also sodium benzoate. Effective. In creams I use a combination of methyl and propyl parabens, and in gels I use Spectrastat

  • sandydijon

    Member
    December 17, 2015 at 6:17 am

    Thank you. Good to know 0.5% Potassium Sorbate is not too much. I’m afraid of preservative overdose and bad products at the same time.

  • MarkBroussard

    Member
    December 17, 2015 at 2:16 pm

    @sandydijon:

    I’ve used Gluconolacctone (and) Sodium Benzoate on numerous occasions and have had no issues with it at 1.0% to 1.5%.  A trick is that you do need to incorporate it into the water phase with no other ingredients under high shear and then heat to 70C.  Otherwise, it has a tendency to partially re-crystallize if you incorporate it without heating.  You can beef it up with the addition of 0.35% Potassium Sorbate.
  • Farouk

    Member
    March 31, 2016 at 7:28 am

    Hello Everybody.

    Can we not put preservatives in a liquid soap since Customer Review does not reaches ? The preservatives could be a result of the problems caused to the skin of hands : dryness, irritation, itching.

  • Anonymous

    Guest
    April 6, 2016 at 1:59 am

    Are stearer rounds effect on viscosity of hand wash liquid. How much round of stearer for hand wash liquid. I use 125 round p m. My hand wash not so thick.

  • Chirag

    Member
    April 18, 2016 at 6:56 am

    9782813356 please check out he titles handwash preperation so as to, get, some details about liquid formulation.

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