Formulating a profesional strength Glycolic acid gel
I am trying to make the above for what’s referred to in the finished product as at 20% glycolic gel. I have some pure 10% glycolic and add it to the product at 5% of the total product. So would this be a finished 10% or a 5%?. Since I can only find to purchase 10% strength. How can I make a professional 20%. Would having it as 20% of the total formula or is that way too much? Help! Also do I need a ph meter and can you recommend one as it needs to be between 2 and 3 pH.
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