Before I go any further, let me get one thing out of the way: Shaving is total choice. What a person chooses to do with their body hair is their own business. End of story. That said, if you are someone who chooses to remove their body hair with a razor, you probably want to ensure you're using one of the best shaving creams for razor bumps to avoid any unnecessary irritation when you shave.
Razor bumps happen when there's friction between your razor and the skin it's gliding over. In order to avoid them, you need to find a cream or a gel that lubricates your skin to allow a smoother, easier shave. It's also important to regularly change out your razors, because a dull razor can cause nicks and friction.
If you've already got bumps, there are a few home remedies you can try. First of all, you have to avoid shaving the area any further, because that will only increase inflammation. Try applying some kind of exfoliating toner on the rash, like witch hazel or apple cider vinegar, to help encourage the dead skin cells to come off. Then, apply a cortisone cream to help the itchiness. Over time, the bumps should dissipate.