The Neutrogena ultra Sheer Dry-Touch Sunblock SPF 70 is by far my favorite facial sunscreen.
This is also waterproof and sweat proof so it is a perfect sunscreen for the really hot summer days. This is does have a slight fragrance, but it mostly smells like regular old sunscreen. This provide protection from both UVA and UVB rays. This retails for about 9-11 dollars depending where you get it. I however got my at Costco last summer, two for $14. Even though it is about a year old it still in the same condition as it was last year. It hasn't developed any discoloration or smell.
For me this is a summer must have and I never step outside of my house without this on :)