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Ph measurement
Hello,
<div>I have a question and I hope someone knows its answer please.</div><div>Should I measure the pH value after every addition of active ingredients in my cosmetic formula?</div><div>
</div><div>For example, I have an Alpha Arbutin serum that is stable at a pH of 5-7. I added aloe vera juice to the water, and when I measured the pH, I found it to be 3.8.</div><div>Should I raise the pH to 5 for the Alpha Arbutin, or is it unnecessary?</div><div> Thanks in advance.</div><div>
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1 Reply
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It depends. Usually yes, you want correct pH before adding the ingredient, because some ingredients might be sensitive (for example Sodium Ascorbyl Phosphate). But some (Niacinamide) are that sensitive to pH, so it can be adjusted later.
I don’t know about Alpha Arbutin, but it is better to be safe - measure and adjust the pH before and after addition (because the ingredient itself can change it)
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