Hello,
I use the Neutrogena products. Ultra Sheer body mist with spf 70. Also Neutrogena makes one specifically for the face which is also spf 70.
Of course if you swim they must be reapplied. However, both say reapply after 80 minutes. I definitely try not to stay out in the sun that long and i do wear a hat, and protective clothing as well. I wasvbadly sunburned on the back of my neck, which was very painful without pigment. I learned my lesson!