미백: the actives Korea recognises for brightening claims

For brightening claims Korea recognises a defined set of actives at specified concentrations — niacinamide, arbutin, and several vitamin C derivatives including ethyl ascorbyl ether and ascorbyl glucoside among them. A product using one at its notified level may carry a reviewed 미백 claim.

What 미백 does and does not mean

The Korean term translates literally as whitening, which reads badly in English and is usually rendered as brightening. In regulatory terms it concerns the appearance of pigmentation — helping skin look more even and reducing the look of dark spots. It does not mean lightening your natural skin tone.

The recurring actives

Niacinamide is the one you will meet most, and it appears at a consistent notified level across many brands. Arbutin and a family of stabilised vitamin C derivatives also appear regularly. Their repetition across price tiers is a direct consequence of the notification system.

Why the same percentage keeps appearing

If you have noticed several unrelated Korean products listing niacinamide at the same figure, that is the notification system rather than a coincidence or a copied formula. Niacinamide and arbutin are both notified across a 2–5% band, so brands cluster at 2% — the lowest level that still earns the claim. Other actives are fixed rather than ranged, which is why their figures never vary at all.

How to read it as a shopper

A 미백 marking tells you a recognised active is present at a reviewed level. It does not tell you whether the rest of the formula is good, whether the texture suits you, or how quickly you will see anything. Pigment work takes months regardless of the label.

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✍️ Written & reviewed by the KoreaPlus Editorial team — dermatologist-informed, cosmetic-science researched & source-cited. Last reviewed: 2026-08-23.

General educational information using cosmetic structure-function wording — not medical advice. Always patch-test new actives. © KoreaPlus.