I've been using Neutrogena Ultra Sheer Dry-touch Sunblock (comes in 30 and 45) and their new Active Breathable Sunblock. I'm a redhead with fair skin and both of these have been working for me. I like the newer Active variety as it's waterproof and sweatproof though it's a little heavier than the UltraSheer which is the lightest stuff I've tried. No yucky, greasy feel. I'm able to find it in local stores.