Why it worked
The video likely worked due to its direct comparison format and the visual demonstration of a common skincare concern (white cast from sunscreen), offering a seemingly superior solution from Korean products.
Summary
The video compares American sunscreen to Korean sunscreen. It shows a person applying a white cream to their face, labeled as "american sunscreen," and then a lighter, more fluid substance, labeled as "korean sunscreen." The Korean sunscreen is highlighted for providing full protection with no white cast.