A bottle of sunblock!
Since I'll be on Okinawa in a week or two (which is a sunny island, by the way, and my skin doesn't respond well to powerful UV-rays), some preparation is in order. So I went to a drugstore and was confronted with a wall, containing a gazillion different brands and varieties of sunscreen, sunblock, pre-sun, aftersun and what have you.
In the end, I settled for the house brand; a 200ml bottle of something rated 50.
Thing is, I don't have the slightest idea whether that's enough or not.
Oh well, we'll see. :) How hard can it be?
Cheers, K.