AHA in Soap Based Face Wash

bsinglebsingle Member
in Formulating
Can I add salicylic acid and glycolic acid in soap based face wash? what precaution should be taken in terms of pH? will it works or stable at pH 8-9 since KOH is being added? 
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Comments

  • PharmaPharma Member, Pharmacist
    No, the two acids won't work at that pH, they turn into their salt form and be nothing more than pixie dust, great for claims but nothing more.
  • bsinglebsingle Member
    Pharma said:
    No, the two acids won't work at that pH, they turn into their salt form and be nothing more than pixie dust, great for claims but nothing more.
    Thank you so much for answer.
    Are you saying that "do not use these two acids"?
    Can I use any one of them?
  • PerryPerry Administrator, Professional Chemist
    At pH 8 - 9, acids become ineffective salts. So, you can't use either if you want them to actually do anything.
    Learn to formulate cosmetics
  • bsinglebsingle Member
    Thanks Perry for information
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