America buys Korean collagen. Korea buys probiotics and slimming.

Supplements are the newest category on our board, and they immediately show something the skincare charts only hint at: the same market, split by what each side is actually trying to buy. Among the Korean supplement products US customers order, one brand dominates — BB LAB, with 6 of the top 20 slots, all collagen film, PDRN glow packets and hair-and-skin routines. Beauty-from-within, imported.

Korea's own supplement chart is a different aisle entirely. The leaders are probiotics (LACTO-FIT), slimming and 'cutting' jellies (FOODOLOGY), and vitamins (Korea eundan) — gut health, weight management, daily basics. The ingestible that crosses the Pacific is not the one Koreans reach for most.

Why the same shelf splits in two

A supplement is bought for a felt need, and felt needs are local. In Korea, the ingestible market is mature and functional — probiotics and diet products are groceries. What travels to the US is the part that fits the American K-beauty story: collagen and PDRN as an extension of the skincare routine, sold as glow rather than health. The crossover isn't the category; it's the framing.

The PDRN thread, now in a capsule

It's worth noting where PDRN shows up. The salmon-DNA ingredient that has been the fastest-heating signal on our Ingredient radar — first in serums — now anchors BB LAB's US supplement slots too. When an ingredient jumps from the serum aisle to the vitamin aisle, that is a trend with real momentum behind it, not a single-format fad.

The limits, stated first

Slots count how many products a brand places in the top 20 of each market's weekly supplement sample — shelf presence, not units sold. "US" is what US customers order on Olive Young Global, a window onto Korean-supplement demand in America rather than the whole US supplement market. Supplements are new to our archive, so treat this as a first reading, not a settled trend.