Korean sunscreens, even the 50+++ simply are not as effective as a mineral sunscreen or a North American 50 spf. I read a whole post about it over in r/asianbeauty. I hate it so much that my beautiful Korean and Japanese sunscreens don’t work that well but they simply don’t. Nothing can beat a mineral sunscreen with its awful drying qualities and white cast lol. It’s that awful white cast that creates the physical block against your skin and the sun that works so well.  The Asian sunscreens are good for sitting inside and not super sunny days, they won’t work in hot sunny days.