The appearance of scar shows the healing action and repairing of tissues. The regenerated layers of skin are meant to cover the body to prevent the infections and further injury caused by germs. A scar takes a certain amount of time to heal completely but there is no exact time defined for the scar to disappear. Some scars may take a short time to disappear and some may take longer. It depends on a number of factors. Following are some factors that affect the healing process to be faster or slower......
http://dubaicosmeticsurgery.over-blog.com/2017/03/how-long-does-it-take-for-a-scar-to-heal.html