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Betweendots
Oily/Sensitive
I only tried the Ordinary and it was very mild product. I think 20% will be the most effective since all these are serums so their bioavailability should be similar.
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Cedric
Oily/Resilient
I see.. seems like 10% in general is mild and not v effective.
Azeclair actually isn't 100% potassium azeloyl diglycinate (the azelaic acid derivative). Azeclair is just a trade name. Geek and Gorgeous have clarified this in their product page. 20% azeclair means the product contains 6% PAD.
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