EpiLight or Photoderm Diet Summer Weather and Acne Sunlight and Acne Teens vs. Other Age Groups Facials and Other Cosmetic Procedures 1.
Most acne medications require at least a few weeks or a few months to become fully effective.
Therefore, these medications should be best used in preventing new lesions from developing. Merely waiting for acne lesions to appear before beginning treatment is usually not an effective use of these treatments. Increased emotional stress is frequently a cause of acne flares. If standard acne treatment fails, or if stress is extreme, your dermatologist may suggest proper treatment or referral for improvement of your stressful situation. Hormonal factors may contribute to acne.