Near Gangnam Station, Olive Young Central Gangnam Town (403 Gangnam-daero, B1-4F) is open until 10:30 pm. Garglin Fresh Breath Mint Spray (15ml) has 2.5K+ reviews. Big mouthwash bottles are liquids over 100ml, so pack them in checked baggage; sticks are easiest on the road.
Olive Young
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