ScienceAcne - Our expert interviewTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScience12/13/2018December 13, 2018In Good Shape talks to dermatologist Dr. Ralf Hartmann, who specializes in treating acne. He explains which remedies are available, and at what point it’s advisable to see a doctor.https://p.dw.com/p/39UrDAdvertisement