Japanese women apparently prefer to stay as pale as possible and so avoid the sun and use spf 50+ sun lotion - the lowest I could find in the chemist was spf 35. According to my in-depth research (google) a lot of japanese sun lotions aimed at women have skin whitening agents in. I'm not sure how true that is, but I'll definitely be avoiding those. I'm Casper enough as it is! Which reminds me of this meme:
My sister and I cackled when we saw this because it is so true for both of us.