I love this Luminous Primer from 100 Percent Pure. It's the only one I've found that doesn't break me out. A little pricey but it's all natural and lasts a long time. I try to use a really minimal amount too since I have oily skin.
http://www.100percen...esve-p/1cfp.htm
thanks for the suggestion. I've never heard of this brand, but I like that they use natural products. Do you use their makeup too?
No prob! I use their mascara and love it, and also like some of their lip glosses and cheek tint. I don't use any of their face makeup though. Tried their concealer once but it was way too dark for me. I also really love their acne products, at least the cleanser and tonique. Didn't notice any huge improvement with the spot treatment. For face powder, I use Everyday Minerals. Also love Everyday Minerals eye shadows. Right now I'm using Makeup Forever foundation and concealer. It's not natural and I'm not happy about it but it's the only thing that gives me enough coverage right now. Though my skin has improved enough that I only use that on days/nights when I'm doing something where I want to look really nice. Most days I will just throw on the Everyday Minerals powder and it's good enough. RealPurity is another great company. Have only tried their eyeliner pencil and lipsticks so far but I love them both. They make the best natural lipstick if I've ever found. Really bold opaque colors, you'd never know it wasn't a major brand, but without the bad chemicals! I've been looking for and trying out natural cosmetics for years so I'm happy if anyone can learn from my trial and error! 
wow, thanks for the recommendations. You know way more about natural makeup than I do! I have been using Smashbox healthy FX foundation for 2 years now (healthy fx, not so healthy ingredients, but at least no parabens). Sometimes it looks good, and sometimes it slides off my face or turns orange! It depends on the day and the weather, because I always follow the same prep routine but with different results. It takes too long to apply neatly, so I just use my fingers...but I did choose that over makeup forever because of the SPF and the lighter texture - have you tried it? It hasn't made my acne worse, which is a plus, but when I have inflammed pimples it does feel a bit heavy.
I checked the RealPurity site and they have a natural foundation - have you tried that one? I'm trying to replace smashbox or at least use it less and rotate with mineral makeup.