Why spend an hour on a makeup lesson during a short trip to Korea?
Because the sightseeing ends and the skill does not. That hour is the part of the trip you still use: someone fixes the brow, the liner, and the amount of product until the mirror matches the way you hoped you would look here. You walk back into the day already wearing the result, and you can do it again the next morning. Book the 40-minute eye and brow course or the one-hour daily lesson, in English, on a day you are in Busan.
Why the hour outlasts the sightseeing
Sightseeing is over when you leave the beach or the street. The lesson is the part the answer says you still use, because the skill stays in your hands. On a short trip, that is the reason to give the hour away: the day continues, and so does the face you learned.
What gets fixed in the hour
The work named in the answer is specific. The brow, the liner, and how much product you are using get corrected until the mirror matches the way you hoped you would look while you are here. You see the correction on your own face before you stand up. It is not a list you reconstruct from memory on the plane.
What you are wearing when you leave, and how you book it
You walk back into the day already wearing the result, and you can do it again the next morning because you just did the sequence yourself. The two ways to book that hour, both in English, are the 40-minute eye and brow course and the one-hour daily lesson, on a day you are already in Busan.