Stearic Acid saponification results

If I have a Shaving Cream formula with a large percentage of Stearic Acid in the oil phase,  will using a high superfat range of say 10% cause the formula to become too stiff and firm because of the unsaponified Stearic Acid in it?



  • So this is what I have found so far online:

    "Stearic Acid

    Stearic acid is the saturated fatty acid or waxy solid used as a hardening agent or lubricant. This acid helps make skincare creams and lotions “spreadable.” This ingredient can be derived from animals or vegetables. Stearic acid can be found in many vegetable fats, such as coconut or cocoa butter."

    I am wondering if the excess of 10% unsaponified Stearic Acid is what is making the formula too stiff and heavy?

  • chemicalmattchemicalmatt Member, Professional Chemist
    Yes, it will. You are correct.
  • Yes, it will. You are correct.
    OK!  That is valuable information!  Thank so much for your help, chemicalmatt!
    David  :)
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