SUGA picked mixsoon's Bean Sun Serum before a 10K "commute run" in Busan — and even roped Jungkook in along the way.

What sold him: it goes on like a lightweight lotion, no white cast, and sinks in without any sticky finish — the kind of sunscreen you can actually run in.

His one rule, mid-run: never swipe sunscreen up onto your forehead. "You'll be running in tears."

A sun serum light enough for a summer run.