I've read where the higher SPF numbers are basically fiction anyway. Mine stays on all day if I need it to, and survives heavy sweating. Doesn't take much to give me all the protection I need. I have never burned when I've started the day with this, and my nose stays the same color as the rest of my face, which is a feat.

I do avoid all sunblocks when I can, so basically that goes on my nose, neck and cheekbones, and on my ears if I'm running. Tops of my feet if I'm going to be out all day long in sandals. For the rest of it I rely on a hat or visor and cooling sleeves.