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Can this buffer be used in cosmetics
Dear all,
I’m performing a study regarding the preparation conditions of particles to be used as Pickering stabilizers, which include the variation of pH. The pHs that I want to study are 4, 6 and 8. I selected the buffers: potassium phthalate/HCl for the pH 4 and potassium phosphate for the pHs 6 and 8. However, I’m not sure if I can use these buffers for cosmetic applications and I did not find more information about it in the internet.
Can somebody tell me if those buffers can be used? If not, what alternatives I could use?
Thank you!
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2 Replies
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Phosphate is certainly no concern. Phthalic acid on the other hand… not just that phthalates (esters of phthalic acid) have a bad reputation but there are alternatives such as malic, citric, or succinic acid paired with a strong base such as NaOH or KOH
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Pharma said:Phosphate is certainly no concern. Phthalic acid on the other hand… not just that phthalates (esters of phthalic acid) have a bad reputation but there are alternatives such as malic, citric, or succinic acid paired with a strong base such as NaOH or KOH .Dear Pharma, thank you so much for your answer! I will check on these accids ::smiley:
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