Home Cosmetic Science Talk Formulating Advanced Questions How can I get crystal clear transparent soap?

  • How can I get crystal clear transparent soap?

    Posted by Ameen on February 19, 2017 at 3:12 pm

    Hi each one,

    Several batches and  experiments and still not yet got a crystal clear transparency  in my soap, tried different ratio combinations playing with  the ingredients but always getting a semi amber color soap.

    My formula reads like this:

    Water 3%
    NaOH 3
    Prop.Glycol 18
    Glycerol  6.5
    Sorbitol  (70
    % sol.) 17%
    SLES    30
    Stearic Acid  12.9
    Myristic Acid  6
    TEA    2.5

    Any piece of advice, suggestion or hint to get a crystal clear transparent soap is most appreciated. Should I remove any ingredient from this list? Should I add any ? Should I substitute one for another?

    Thank you endlessly each one  in advance
    Retired French Teacher

    Bobzchemist replied 7 years, 2 months ago 5 Members · 6 Replies
  • 6 Replies
  • johnb

    February 19, 2017 at 3:27 pm

    You could try using sugar (sucrose) in place of sorbitol.

    The quality of the stearic acid may count as well. Avoid lower quality stearins - those with high amounts of unsaturates (oleic acid etc).

    Many commercial transparent soaps (eg Pears) use alcohol in their manufacture. Part of this is allowed to evaporate after processing.


    February 20, 2017 at 3:56 pm

    remove sodium stearate and use only alkanolamine soaps;also systematically raise glycerine for clarity

  • johnb

    February 21, 2017 at 8:36 am

    The big problem with using alkanolamine soaps is that they do not solidify.

  • Bobzchemist

    February 21, 2017 at 2:32 pm

    Stearic should be about 20%, drop myristic and TEA out.

    Also try ethanol at varying percentages.

  • crisbaysauli

    February 26, 2017 at 8:41 am

    or you can try one of Dr. Staetman’s Glycerin soap bases.

  • Bobzchemist

    February 27, 2017 at 12:58 am

    Stephenson’s has some great clear soap bases as well.

    When we ran the numbers, we needed to make more than/at least 5,000 pounds/week of our own soap base before it was cost effective not to use their base.

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