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Preventing mold in a serum with a PH of 5.5-6
Alright, so I am just looking for some ideas, currently I use Euxyl9010, the 90% Phenoxyethanol, Ethylhexyl Glycerin combo, and I also use potassium sorbate for my one serum, but the ph on that product is low, like 4.5. I am now working on another serum, the PH is higher (5.5-6) and I know the active range of sorbic acid is quite low around this PH, so what other products are good in prevent mold, this is a water based serum, there isn’t going to be a lot of oils.
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