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the proper way to check pH
hello everyone.
i’m a DIYer and i make skincare products as a hobby.
right now i’m trying to make a simple product with salicylic acid and would like to keep the pH around 4.
It’s a liquid product, water-thin solution. i have a pH meter. but should i dilute this product with water first before testing? if yes, how much water? 50%? 1:10 (water)?
How about testing pH for gel/cream product? need dilution as well?
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1 Reply
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Hi There
If there is already some Water in the Formulation which I expect you don’t need to dissolve the Product if the Concentration of acid is not too high you can just use it directly. For pH 4 there is normally no problem
Just be sure that you calibrated the pH meter before you use at least once a week
For Creams, it’s the same.
hope that helps you
Tobias
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