But can we just take a lotion and put it on it?
Welcome to A2A, smolshelby.
I take it you have a similar pimple? What to do with it depends on what it is. The original poster's pimple seems to have been an ordinary pimple or boil, but not every anal pimple is that.
Generally there is not much you can do with a boil until it bursts. On the other hand haemorrhoids (which are dark coloured) are quite different, and can be shrunk with an astringent cream. And there are other possibilities.
it could also be an ingrown hair. But Ineligible is right. There are many possibilities.