@nurxapp: We see these comments all the time—people wondering why their acne is worse than before when starting tretinoin. Nurx’s Dr. Marie Leger explains what the infamous tretinoin purge is and why it happens. #healtheducation #tretinoin #acne #nurxapp #nurx - The information provided here is not a substitute for professional medical advice, diagnosis, or treatment. You should not rely upon the content provided here for specific medical advice. If you have any questions or concerns, please talk to your provider.