Sudocrem works a treat. As does just leaving it alone for a few days, except for cleaning. Apparently, the cock and the tongue are the two fastest healing things in the human body, so a couple of days and it'll all be good.
If you're anything like me though, it's always the time when you'e got a red-raw cock that your missus suddenly decides that she wants her quarterly shag.
I was once on the second round with a gorgeous looking buxom, brunette and she gave me a brutal wank to finish me off. At the time it felt great, but when I got home, I checked the old boy and he looked like chopped liver - surprise, surprise, the missus got in about 20 minutes after me and was adamant that she wanted shagging - jeezuz, that was like some form of exquisite torture. It's a good job that I was fucking her from behind, as my cries of pain must have come across as one's of ecstasy.
She kissed me on the cheek afterwards and said "Wow, you obviously needed that!" How little did she know!
My cock looked like I'd put it in a blender after that particular day - fortunately, it was right as rain within three to four days.