Cure for Dark Circle by Ayurveda(Kale ghere) Apply thesalivaof your mouth on thedark circles. Do this for a month, the dark circles will disappear. You can see the changes after 8-10 days only. Reasons of dark circle:1.Inadequate sleep 2.Incresed stresson eyes because of watching too much tv or sitting infront of the computer screen for very long. Sometimes the problems in other organs or part of the body results in Dark Circle. You must take atleast of 7-8 hours of sleep everyday and take breaks when working on computer or watching TV.