In Myeongdong, there are several stores that are close to each other, like

Olive Young Myeongdong Town (1st–2nd floors) at 53 Myeongdong-gil and the Myeongdong Station branch on the 1st floor of Migliore at 115 Toegye-ro. At Olive Young Mall, spot patches are categorized under Health Products > Patches & Local Care, so they may be found in a different section than the color cosmetics corner in stores. There is also a 102-patch Partion North Care Spot Patch.