TweetIt still gets absorbed but at a much slower rate. Scar tissue has much less blood flow than normal tissue does. For me when a site gets hard to inject into i don't use it for a while and give the body some time to break down the tissue. You can also use some active techniques such as deep tissue and foam rolling to help break down the tissue and get it to return to a more normal composition. Also try and use th esmallest gauge you can effectively use.