8397fa35_ening_ingredients___WHITERskin__2
[0] Azelaic acid [1] Derived from yeast [3] A 20% concentration of azelaic acid is equivalent to 2% hydroquinone. However, azelaic acid has no lightening effect on normally pigmented skin, freckles, senile lentigines, and nevi. It has selective effects on only abnormal melanocytes. [4] Yes. [2] 
Inhibits DNA synthesis and mitochondrial enzymes, has direct cytotoxic effects toward melanocytes.
List of commercial skin lightening / skin whitening ingredients | WHITERskin
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