Inflammation and reddening of blackheads are usually caused by secondary infections. Patients can eliminate them through topical medications, oral medications, and physical therapy under the guidance of a doctor. 1. Topical medication: For already inflamed acne, antibiotic medications such as fusidic acid cream, mupirocin cream, erythromycin ointment, etc. can be used topically for anti-inflammatory treatment. 2. Oral medication: Patients can also take antibiotics orally, such as metronidazole and cephalosporin for anti-infection and anti-inflammatory treatment. 3. Physical therapy: Patients can use LED red and blue light to treat mild to moderate inflammatory acne. Laser can also be used to kill Propionibacterium acnes in inflamed blackheads to achieve the purpose of treatment. For patients with inflamed blackheads that turn red, it is recommended to go to a regular hospital in a timely manner and under the guidance of a professional doctor for standardized treatment.