Cos De BAHA Azelaic Acid serum diminishes the appearance of blemishes. Infused with azelaic acid, this serum gently exfoliates, visibly improving skin texture and tone. Hyaluronic acid plumps the skin with moisture, while vitamins B3 and B5 soothe and calm, reducing redness and irritation. Regular usage encourages a smoother, clearer complexion with a more even skin tone. This targeted treatment ultimately promotes a healthier, more radiant look.