I bruised the underside of my penis in 2008—the discoloring is still there. I have started trying to use the ‘firegoat roll’ on it… Its such an old injury though, I think it will take some effort to get rid of that discoloration.
Warm it up and do a few minutes of jelqing before doing the firegoat roll to get the best result. It may take a while, but don’t give up too soon.
Heat makes the difference between gaining quickly or slowly for some guys, or between gaining slowly instead of not at all for others. And the ideal penis size is 7.6" BPEL x 5.6" Mid Girth.