Absolutely. Seomyeon and Nampo-dong are both good places to stock up while you're out and about, but don't treat duty-free shops as your only option: duty-free purchases usually involve pickup and departure procedures, so check the official information before you leave. Regular beauty stores are better for buying samples, picking up sunscreen at the last minute, or comparing prices in person.

You could plan your route like this: Start by browsing Olive Young (올리브영) around Seomyeon Station, where the selection of brands and price points is usually fairly concentrated. Then head to Jeonpo Café Street, which is a nice way to combine shopping with a break. In Nampo-dong, you can start around Nampo Station and Gwangbok-ro, and check out the beauty chains, department stores, and duty-free shops along the way. Stores, stock, and opening hours can change, so confirm them on a map or through official store channels on the day you go; don't assume every store will have popular shades in stock.

When shopping for skincare, make a list of the Korean product names or take photos of the packaging first, then compare the sizes, price per milliliter, and whether travel sizes are available. If you're going to the beach, you can buy sunscreen locally, but remember to check whether it's water-resistant and suitable for reapplication; also keep carry-on liquid restrictions in mind when flying. What are you most hoping to find in Busan: makeup, skincare, or limited-edition souvenirs?