Suggest Treatment For Sensitive Penis Head

Hi I have a sensitive penis head. I had trouble retracting the foreskin earlier. Now I can retract it as I have been stretching it in the shower. However, I can stretch it while flaccid. When erect it does not go all the way back. Since I was able to pull it back when flaccid I started washing the glans more often and rubbing it gently; now its a little desensitized there. But the tip is very sensitive and it looks like there are scars. Could you please advise?