Not really, most of those are gimmicks to get more money. I suppose some that supposedly spray a protectant might do something but it’s mostly a feel-good thing people like to do.

To which I’d recommend to OP, if you’re tight in cash, I’d save some of that money and do some cheaper washes here and there. Can go to Ernie’s twice a month on a basic wash with buying the little booklets and save a few bucks.