Best Korean sunscreens that do not leave white cast on dark skin?

White cast comes mainly from inorganic UV filters (zinc/titanium), so on medium-dark skin look for Korean sunscreens built on organic/chemical filters or modern hybrid 'no-cast' formulas. Beauty of Joseon Relief Sun and Round Lab Birch/ Mugwort sunscreens are frequently praised by deeper-skin users for minimal cast, and Isntree's hyaluronic/chemical versions tend to apply clear (their pure-mineral one can cast, so check the filter list). All are available at SPF50+ PA++++ and most layer well under makeup. Apply a generous amount and let it set a minute before foundation. Since formulas and your undertone vary, sampling one or two before committing is smart.

This is general information — an in-person consultation with a board-certified specialist is the only way to get advice tailored to your anatomy and goals.