[Kuuipo]

My vote (and quite a number of dermatologists as well) for best sunscreen is Blue Lizard. They make a version for the face-it is not greasy or comedogenic or unstable. It is zinc oxide-8% and octinoxalate. It has hyalaraunic acid for a moisturizer. Their brand also makes sensitive skin versions that are micronized zinc and titanium and chemical free. They cost $12.50 US and are at many drugstores like Long's.
I avoid SPF makeup because it degrades as well. If you are into only high end brands, Peter Thomas Roth has some zince and titanium based formulas.
Meroxyl, the widely touted "panacea" is a carcinogen. Many ingrediants in sunscreens are tetragenic (cause birth defects potentially-they can be found stored in testes and ovaries of necropsied lab rats,lol) or potentially carcinogenic. Even Helioplex-made to extend Parasol (avobenzene formulations) degrade in a few hours as well.
You should choose cosmetics carefully.