Makeup Wedges

I love makeup brushes don't get me wrong. But I just bought some new liquid foundation and brushes clearly won't work with it. Are makeup wedges bad for your skin? You know, the spongey kind. Revlon has some awesome ones that were next to my foundation, but I was just hesitant. I don't want to break out. If I get a ton of them, shouldn't be a problem, should it?