AHA in Soap Based Face Wash - Formulating - Chemists Corner

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Formulating

AHA in Soap Based Face Wash

Posted by bsingle on July 25, 2020 at 7:25 am

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?

bsingle replied 2 years, 10 months ago 3 Members · 4 Replies
4 Replies

Pharma

Member
July 25, 2020 at 5:46 pm

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.
bsingle

Member
July 29, 2020 at 8:16 am

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?
OldPerry

Professional Chemist / Formulator
July 29, 2020 at 1:04 pm

At pH 8 - 9, acids become ineffective salts. So, you can’t use either if you want them to actually do anything.
bsingle

Member
July 30, 2020 at 6:36 am

Thanks Perry for information

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