Four K-Beauty Brands Just Signed Their New Idol Faces

The K-beauty industry's latest ambassador wave is less about celebrity shine and more about skin-health messaging — every brand in this round is pairing their new face with a specific skin story, not just a vibe.

Riujuran x Kim Sejeong (IOI / solo artist)
Pharma Research tapped singer-actress Kim Sejeong as global ambassador for both Riujuran and Riujuran Cosmetic. The timing is deliberate: Sejeong has an IOI comeback and an Asia tour coming up, so the brand's TV, outdoor, and digital campaign rolls out this month to ride that momentum across domestic and international markets. Riujuran itself is a skin-booster injection built on the brand's patented DOT PN (Polynucleotide) technology — it works at the dermal layer to support the skin's own recovery and barrier function. Riujuran Cosmetic brings that same core technology into topical form. Sejeong's association with the brand leans into the "healthy, bright energy" angle rather than a glamour play, which actually fits the clinical-meets-lifestyle positioning.

TONYMOLY x Leeseo (IVE)
TONYMOLY named IVE's Leeseo as brand model, framing the partnership around her "being herself" image. The brand turns 20 this July, and they're using the anniversary year to sharpen their identity with a series of campaigns — Leeseo is the centerpiece of that push toward a younger, global audience.

ISOI x Gyehun (KICKFLIP)
ISO I brought in boy group KICKFLIP's Gyehun alongside the launch of a new Brightening Calming Spot Serum. The product targets post-blemish marks, active sensitivity, and uneven texture — the brand describes it as designed for skin in your twenties. Gyehun's clean, fresh image was specifically chosen to make the ingredient story feel approachable rather than clinical.

Sensl x Go So-hyeon and Lee Gang-eun
Newcomer brand Sensl launched its first product line with models Go So-hyeon and Lee Gang-eun, and simultaneously opened on Musinsa Beauty. The standout debut product is the Quick Tint, which hit the real-time number one spot in the lip makeup category immediately after launch. It comes in two lines: Color Up (long-wear color) and Blind Touch (designed to apply without a mirror). They also dropped a Mute Cream Perfume — a solid cream-type fragrance built for portability.

The throughline across all four deals: brands are choosing faces whose public image reinforces a specific skin or lifestyle claim, not just reach. Leeseo for authenticity, Sejeong for healthy energy, Gyehun for clean-skin clarity. Whether that messaging lands beyond the initial campaign cycle is the real test.