Azelex is the medication used to treat mild to moderate acne. Acne is a skin condition that occurs when your hair follicles become plugged with oil and dead skin cells. Since the dirt and bacteria traps in hair follicles, it causes red bumps and pus-filled pimples to appear on the face, neck, chest, back and shoulders. Acne looks very unsightly and becomes stubborn over the time. Howe..