[Azelaic Acid Serum For Reducing Facial Redness: Azelaic acid reduces capillary expansion improving facial redness and visible blood vessels. Azelaic Acid Serum For Cleansing Pores: Azelaic acid effectively regulates skin oil secretion clears impurities from pores accelerates the turnover of the stratum corneum. Azelaic Acid Serum For Fading Dark Spots: Azelaic acid can inhibit the production of melanin helping to fade dark spots and even out skin tone. Azelaic Acid Serum For Anti-aging: Azelaic acid can effectively inhibit the formation of free radicals in the skin reduce oxidative stress on skin cells. When using azelaic acid serum please note: use 1-2 times per week; apply sunscreen during the day after use; avoid using on peeling or damaged skin.]