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Signals2026-09-28 metric: concentration ↗

MEDIHEAL holds 7 of Korea's top 100. Most brands hold one.

Korea's best-seller chart looks like a crowd — 54 different beauty brands in a top 100. Read it slot by slot and it is two markets at once: a handful of brands stacking product after product, and a long tail where most names get exactly one place. MEDIHEAL leads the stack with seven.

7 of 100
slots on Olive Young Korea's top 100 belong to MEDIHEAL this week — more than any other brand, with its Essential Mask Sheet at #1
35 of 54
beauty brands on the chart (65%) hold exactly one slot — the long tail where a single product is the whole presence
6 · 5 · 5 · 5
Anua (6), then Torriden, Abib and CLIO (5 each) — the second tier of brands that hold several products at once
Bar chart of chart slots per brand on the beauty listings of Olive Young Korea's top 100, 2026-W40. MEDIHEAL 7, Anua 6, Torriden 5, Abib 5, CLIO 5, rom&nd 4, numbuzin 4, AESTURA 3, BIOHEAL BOH 3, UNOVE 2. 54 brands share 97 beauty slots; 35 of them appear exactly once. Three snack listings on the overall chart are excluded.
Slots per brand on the beauty listings of Olive Young Korea's top 100, 2026-W40. MEDIHEAL holds seven; 35 of 54 brands hold a single slot.

After several weeks of partial reads, this is the first full look at Korea's own best-seller chart in a while — and the first thing it shows is how unevenly the shelf is shared.

MEDIHEAL holds seven slots — the most of any brand

Fact. Of Olive Young Korea's top 100 best-sellers this week, MEDIHEAL holds seven slots, led by its Essential Mask Sheet at #1. Anua holds six; Torriden, Abib and CLIO five each. No other brand has more than four.

And most brands hold exactly one

Observation. Olive Young's overall chart also lists food — three snack listings this week — so we count only its 97 beauty listings. Those carry 54 different brands, and 35 of them — 65% — appear only once. Inference. Getting one product onto Korea's best-seller list is common; holding several at the same time is rare, and that is the real marker of a brand with a grip on the shelf. A single slot can be a hit. Seven is a position.

Why stacking matters

A brand with one product on the chart is exposed to one product's fate — a price change, a stock-out, a newer rival. A brand with seven is spread across formats: MEDIHEAL's slots include both a multi-pack and a single sheet of the same mask line, which is also how bundle-driven merchandising shows up on Korea's shelf. The stackers are the brands that have turned a product into a range.

Receipt: every number above is checkable against the 2026-W40 archive · method on /methodology. A slot is one product line on Olive Young Korea's top-100 best-seller chart for 2026-W40; sets, sizes and multi-type packs of the same product count as separate slots, so a brand's slot count reflects its merchandising as well as its demand. The overall chart ('Top in Korea · All') also lists food; three snack listings (DELIGHT PROJECT chips) are excluded, leaving 97 beauty listings. Korea's chart is read by manual capture since 2026-W38. Chart position on Korea's #1 health-and-beauty retailer, not sales volume.
Cite this ↓

"MEDIHEAL holds 7 of Korea's top 100. Most brands hold one." — kbeautytmi, 2026-W40. https://kbeautytmi.com/stories/mediheal-holds-7-of-koreas-top-100-2026-w40

↗ Chart image — free to use with credit Free to cite — rankings can't be collected retroactively, so this archive exists nowhere else.
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