So it's been about 40c in Melbourne, and I am Irish.
So I cover my self in sunscreen every day.
Last weekend I did not get a chance to reapply and I got burned, only not in a large patch around a scar on my arm where I apply Flawless...
I rubbed some on my sun burn and it was cleared up within hours (normally takes days).
You guys need to make sunscreen shampoo, my head is always getting burnt.