Is a private makeup lesson a good thing to do with a friend on a Korea trip?

Yes, if you want a shared memory that is also a skill, not only a photo of a meal. You each get corrected on your own face, and you leave able to get ready together the next day without guessing.

A friend trip needs something you both keep

Dinners blur. A lesson does not, because you watched each other figure it out. RihaKim Makeup stays private and small, so a friend is company, not a crowd. You are not performing for a class of strangers.

The feeling you are booking

It is the fun of trying something slightly brave together, and the practical win of both knowing the look afterward. Book it on a day you are both in Busan if you want the trip to include a story you can still use at home.