Brighten and reduce the appearance of blemish-prone skin without stripping the skin’s natural oils, by spot treating blemishes or applying a thin layer topically all over the face with Mario Badescu’s Clarifying Serum with Azelaic Acid. Helps fight the bacteria that causes reoccurring blemishes. Say hello to healthy-looking complexion!CLINICALLY TESTED:In a consumer perception that of 21 participants between the ages of 18 – 58 that occurred over 4 weeks, - 86% of people notice calmer skin after 4 weeks. - 86% of people notice less redness after 4 weeks. - 86% of people said this product helped reduce the appearance of breakouts after 4 weeks.Benefits of the ingredients: - Azelaic Acid: Found in yeast, Azelaic Acid clarifies skin tone while reducing the appearance of hyperpigmentation. This antioxidant also aids in soothing sensitive skin. - Postbiotic and Prebiotic Serum: Used to calm blemish prone skin and to achieve a bright complexion.