Central Myeongdong Town (27 Myeongdong 8-gil, B1-3F) and Myeongdong Town (53 Myeongdong-gil, 1F-2F) open 10:00-22:30 with big makeup sections. For cushion, try the Be Glow Volume Cushion: 10 shades, 13,610 reviews. 본품+리필 = cushion plus a refill, so you can swap mid-trip and still have one for home.