Don't quote me, but I think using nothing is better than using anything, unless it's 100% natural (eg avocado facemask.)
Be careful which products you buy, some only list the active ingredients, which are natural, and you don't know what other crap might be in there.
Also, just because it's natural doesn't always mean it's good either. Some natural ingredients are harsh on the skin. I, for one, react badly to products with citrus.
If your skin is looking and feeling fine, I wouldn't mess with it. Just drink lots of water and be healthy!