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[jksl]

Hi all,

I made a bunch of purchases on makingcosmetics.com

here's what i got

polysorbate-80
zinc oxide (micronized) powder
zinc oxide powder
colloidal oatmeal powder
AS corn starch
l-ascorbic acid powder
magnesium ascorbyl phosphate powder
niacinamide powder
citric acid crystals
liquid licorice extract

Now, all these have different pH and combining them will result in some other pH. Where can i learn how to mix these ingredients properly, find out which ones don't mix well together, figure out what pH i should try to aim for, etc. etc. etc?