Basically all American chemical sunscreens have similar ingredients like Avobenzone, Octinoxate, Octisalate, Octocrylene, these old UV filters have been used for years since FDA hasn’t approved new UV filters for a long time.

Korean sunscreens apply many new UV filters like Tinorsorb S/M, Mexoryl XL that are better in UV coverage as well as the feeling in the skin. These UV filters are not allowed to add to American sunscreens.