Saw this article in the NY Times. A biotech start-up is teasting a skin care product that contains a bacteria called Nitrosomonas eutropha which is one of the species we use in bio filters. I've never been a fan of bacteria in a bottle, partly because you never know what's actually in the bottle. But in this case I'd feel like you'd really know you were getting just Nitrosomonas eutropha.

So rub some bio media on.