In Myeongdong, try Olive Young Myeongdong Town (53 Myeongdong-gil, 1F-2F) or

Central Myeongdong Town (27 Myeongdong 8-gil, B1-3F), both open 10:00-22:30. AESTURA's Atobarrier365 Lotion 150ml and ZEROID's Soothing Lotion 160ml each have 2,300+ reviews. Anything over 100ml goes in checked luggage.
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