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ISSUE04 · BEAUTY

A Word That Started in Gangnam — What "Skin Booster" Really Means

Mar 2, 2026

Makeup covers the skin. A skin booster changes the skin itself. It's the first thing thirty-somethings reach for in Gangnam.

Talk with Korean women your age in Gangnam and, at some point, a word slips naturally into the conversation: "skin booster." It's an awkward term to translate, so first-time listeners usually assume it's the name of a cosmetic. But it isn't something sold in a bottle. Here's the one-sentence version. If makeup is the act of covering the skin, a skin booster is the act of changing the skin itself. Let's unpack that. What we normally do with cosmetics happens on the outside of the skin — laying on moisture, hiding flaws, adding light. Wipe it off and it's gone. A skin booster looks the other way. It works on the inside of the skin — the layer where moisture is held, the layer where firmness is made — placing something directly there so the skin can hold a better state on its own. In Gangnam's dermatology clinics, this kind of procedure is named as one of the first things women in their thirties seek out. You may have heard the names. Procedures like Rejuran and Juvelook are among those most often mentioned. The specific ingredients and methods differ, but the aim is similar: not one grand transformation, but lifting the skin's baseline by a single step. So the most dramatic moment isn't right after the session — the change shows over days and weeks, as "my tone looks even" or "it feels filled from within." Why did the word take root in Gangnam in particular? Gangnam holds the densest cluster of aesthetic dermatology clinics in Korea, and density always produces two things — fast trends and fierce scrutiny. A procedure that doesn't work doesn't survive long on that street. That is the backdrop to how "skin booster" began in Gangnam, spread across Korea, and reached the Japanese fans of "Korea beauty trips." Here is the line worth carrying with you. The first thing a thirty-something Korean woman receives in Gangnam isn't a procedure that adds something on top — it's one that fills the skin's foundation. Looking to the quiet base before the showy change: that is the Gangnam order of things. One thing, though, deserves to be said plainly. Skin boosters come in many kinds, and what suits you depends on your skin's thickness and condition. If your skin runs thin — as Japanese skin often does — the same procedure must be adjusted in strength and depth. So "which one should I get" comes second to "which one suits my skin." That is exactly where KLIZEN works. Among Gangnam's countless options, we help choose what fits your skin, with an interpreter beside you. One step beyond knowing the word "skin booster" — to knowing what that word means for you.

— Chris Seungjae Choi