<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi DoctorI got a well-toned physique and there by my ABS are in good shape. But what bothers me is the dark ring on my waist line. Hence I think twice while wearing my swimming trunk.Request your advice in getting rid of this in a natural way, no matter if it takes time.Thanks Regards  <response>: 1. Dark skinring around the waist line can be due to tight clothing around the waist, the skin in that area becomes dark due to the friction, thus one has to determine what might be causing this skin discoloration.2. Get yourself examined with relevant investigation, because appropriate treatment demands accurate diagnosis and diagnosis needs physician consultation. In best Interest it will be wise to see a Dermatologist for proper evaluation and management3. Depigmenting creams containing HY Chat Doctor. 4. Potato acts as a very good bleaching agent, this would lighten the marks.5. Take two spoonfuls of gram flour, add a pinch of turmeric, few 