Minor injuries often fade entirely after a handful of days major ones are more likely to leave a lasting mark. Whether self-injury will result in scarring depends on the type and severity of the injury. How long it will take for self-harm scars to go away is different for everyone. Do these self-harm scars ever truly go away? How Long Do Self-Harm Scars Take to Go Away? But self-inflicted wounds aren't always so easy to share, and there are some scars we would rather not bear. We show them off we point to them and say, 'Look at what I survived.' Some of us remember that iconic scene in Jaws when the boys sing old sea shanties and cheerfully compare their battle scars. Do self-harm scars ever go away? Let's discuss the answers to that question.