The 101 APAD 20% Azelaic Acid Derivative Serum is a potent formula designed to address various skin concerns. It contains a high concentration of azelaic acid derivative, known for its exfoliating and brightening properties. This serum helps to control oiliness, reduce acne breakouts, and improve the appearance of dark spots. However, some individuals may experience sensitivity or dryness when using this product. It is advisable to perform a patch test and consult a dermatologist before incorporating it into your skincare routine. Discontinued