$$$ - Bare Escentuals: i.d. Bare Minerals SPF 15 Foundation
"Made of only pure, crushed minerals from the earth, i.d. bareMinerals SPF 15 Foundation looks like a powder, feels like a cream and buffs on like silk, giving skin a natural luminosity, and feels as if you are not wearing any makeup at all. The coverage is flawless, free of preservatives, talc, oil, waxes, fragrances, and other chemicals that can irritate skin and cause breakouts."
This stuff is great if you're only going to wear it for about 4 hours. Over that and it tends to get cakey and just not good. It also has a tendency get caked into fine lines so they are accentuated (this happens very quickly; make any expression at all, and you are done for). It feels like you aren't wearing any makeup for about the first 30 minutes; then you can definitely feel it.