Sullyoon설윤설윤
Sullyoon (설윤) is a member of NMIXX, the JYP Entertainment girl group that debuted on 22 February 2022, and is from Daejeon. She hosted MBC's music show Show! Music Core for about two years from 2023 and became Bioderma's brand ambassador in August 2026.
Sullyoon (설윤) is from Daejeon and a member of NMIXX, the six-member JYP Entertainment girl group. She debuted with them on 22 February 2022 with the single album AD MARE, and the agency’s own profile page lists her third of the six. That she is from Daejeon is something she said herself in the Hanwha Eagles’ video ahead of her first pitch for the club in September 2025, and Asia News Agency and Sports Chosun reported it that way.
The agency introduced the members one at a time before the debut, and Sullyoon was the fourth. Newsis reported on 3 September 2021 that JYP Entertainment had posted a cover of Sunmi’s ‘Full Moon’ to the JYPn YouTube channel at midnight that day, presenting her for the first time. The same report noted that she had not been shown to the public until then and that the video had the feel of a home movie. The debut came on 22 February the following year.
The first time her voice went out under something other than the group’s name came a year after the debut. On 16 February 2023 at 6 p.m. Sullyoon and Lily released ‘The Moment’, OST Part 4 of the Netflix series Love to Hate You; the agency presented it as the group’s first unit OST, and Hankyung TV called it the pair’s first duet since debut.
A cover sung on television became a record of its own three years later. Newsis reported that Sullyoon had appeared on KBS Kpop’s Limousine Service in 2023 and sung Parc Jae Jung’s ‘Let’s Say Goodbye’ five keys above the original, and that the performance drew attention online. JYP Entertainment said the duet ‘Always’, released on 25 February 2026, came about because Parc Jae Jung had been struck by that performance and proposed the collaboration. He wrote the lyrics, and he and Park Hyun-jung wrote the music — the two men who had made ‘Let’s Say Goodbye’ together.
Away from the group’s releases she has worked as a music-show host. She was an MC of MBC’s Show! Music Core from 15 April 2023 to 15 February 2025, and Sports Seoul looked back on it in November 2025 as about two years of hosting.
Her home city became the setting of a variety episode. On the broadcast of 20 January 2026 Sullyoon and Haewon appeared on SBS’s Whenever Possible for an episode filmed in Daejeon. Newsen reported that the first participant was a KAIST student and a third-intake member of the fan club NSWER, and that at their request the two sang ‘Hello, Gabby!’ on the spot. Xportsnews reported that the episode was first among all Tuesday variety programmes.
She has taken a ballpark mound three times — the Oakland Athletics’ home game in Sacramento in August 2025, the Hanwha Eagles’ home game in Daejeon in September the same year, and the San Francisco Giants’ home game in April 2026. Before the second of them the club wrote on its official account that she was pitching “in her home city of Daejeon”.
Three brand relationships are confirmed by reports. In October 2024 le coq sportif chose Haewon and Sullyoon as the models of its 2024 FW campaign; in June 2025 Elizabeth Arden released a Capsule Serum photoshoot with her and introduced her as its ‘muse’; and in August 2026 Bioderma named her its brand ambassador alongside the launch of Atoderm Facial Lotion. At the events of ETRO, H&M, Longchamp and CHAGEE she appeared as an invited guest, and no outlet described her as those brands’ ambassador.
The songs and records she has sung on are gathered on the NMIXX hub. The group’s first studio album is Blue Valentine, released in October 2025, and the fifth EP Heavy Serenade followed in May 2026.
Sullyoon named Bioderma's brand ambassador for the Atoderm Facial Lotion campaign
Bioderma appointed Sullyoon as it launched the Atoderm line's first face-only product. The campaign film went up on the brand's official YouTube channel on 24 August.
Brief · Read the storyDigital cover of Harper's Bazaar Korea's July issue, a photoshoot with Onitsuka Tiger titled 'In The Wings'
Two digital covers on the theme of a ballerina in the moment before the curtain rises. The magazine wrote that the clothes and shoes in the shoot are Onitsuka Tiger's.
Harper's Bazaar Korea · Source 1Cuts the ribbon at the opening of CHAGEE's Gangnam flagship store
She attended the opening of the tea brand's first store in Korea, in Seocho-gu, Seoul, and took part in the ribbon cutting.
The DigitalTimes · Source 2Sullyoon throws the first pitch at the San Francisco Giants' home game, caught by Lee Jung-hoo
The Giants against the Phillies at Oracle Park. NMIXX performed 'Blue Valentine' after the pitch.
Feature · Read the storySullyoon releases 'Always', her duet with Parc Jae Jung
A ballad about a parting, written and composed again by Parc Jae Jung and Park Hyun-jung, the pair behind 'Let's Say Goodbye'.
Feature · Read the storySullyoon and Haewon appear on the Daejeon episode of SBS's Whenever Possible
An episode filmed in Sullyoon's home city. At KAIST the two sang 'Hello, Gabby!' on the spot at a fan's request.
Explainer · Read the storyAttends the opening of Longchamp's pop-up store 'Le Village Longchamp'
At Lotte Department Store Avenuel Jamsil, Seoul, a pop-up presenting the spring 2026 collection 'Cocooning on Ice'; she attended with Jiwoo.
Asia Today · Source 3Attends the opening photocall of H&M Seongsu
A photo session at the opening event of H&M Seongsu in Seongsu-dong, Seoul.
XportsNews · Source 4Sullyoon throws the first pitch at the Hanwha Eagles' home game in her home city of Daejeon
Hanwha Life Ballpark in Daejeon. The club called it her hometown on its official Instagram, and Sullyoon took the mound in a full Hanwha uniform.
Feature · Read the storyAttends the photocall for ETRO's autumn-winter 2025 collection presentation
The presentation was held at the Strax Gallery in Nonhyeon-dong, Seoul.
Electronic Times · Source 5Sullyoon throws the first pitch at the Oakland Athletics' home game, with Lily singing the US anthem
The Athletics against the Diamondbacks at Sutter Health Park in Sacramento. NMIXX performed two songs in the home team's uniform.
Feature · Read the storySullyoon's last broadcast as Show! Music Core MC, closing about 1 year and 10 months of hosting
She stepped down together with Younghoon of THE BOYZ and the actor Lee Jung-ha. iMBC reported it on 8 February.
Feature · Read the storySullyoon's first broadcast as MBC's Show! Music Core MC, with a 'Mr. Chu' special stage
The first broadcast after MBC announced her as a new MC on 6 April. She hosted with Jungwoo of NCT and Lee Know of Stray Kids, and the MBCkpop channel posted the special stage.
Feature · Read the storySullyoon and Lily release 'The Moment' for the Love to Hate You soundtrack
The song their agency introduced as NMIXX's first unit OST. The music video went up on the STONE MUSIC channel the same day.
Explainer · Read the storyJYP Entertainment
NMIXX are a six-member JYP Entertainment girl group who debuted on 22 February 2022 with the single album AD MARE under the banner of MIXX POP. The Fe3O4 trilogy and the first full-length album Blue Valentine followed, and in November 2025 they opened their first world tour.
바이오더마 · brand ambassador
엘리자베스아덴 · Capsule Serum photoshoot, introduced by the brand as its 'muse'
르꼬끄 스포르티브 · model of the 2024 FW campaign 'SEE THAT', with Haewon
Sullyoon and Haewon of NMIXX spent a day in Sullyoon's home city of Daejeon on the episode of SBS's Whenever Possible broadcast on 20 January 2026. At KAIST they sang 'Hello, Gabby!' on the spot for a member of the fan club NSWER, and Xports News reported that the episode led all Tuesday variety shows.
Sullyoon and Lily of NMIXX released 'The Moment', part 4 of the soundtrack to the Netflix original series Love to Hate You, at 6 p.m. KST on 16 February 2023. Their agency JYP Entertainment called it the group's first unit OST, and Hankyung TV called it the pair's first duet since their debut.
NMIXX's first headline world tour, EPISODE 1: ZERO FRONTIER, opened at Incheon's Inspire Arena in November 2025, four years after the group debuted. It went through five European cities and six North American ones in spring 2026, and grew to 19 shows in 17 cities once five Asian dates were added.
Sullyoon of NMIXX threw the ceremonial first pitch at the Oakland Athletics' home game in Sacramento on 1 August 2025, at the Hanwha Eagles' home game in her home city of Daejeon on 27 September that year, and at the San Francisco Giants' home game on 6 April 2026, where Giants outfielder Lee Jung-hoo caught it.
Sullyoon of NMIXX hosted MBC's Show! Music Core for about 1 year and 10 months, from her first broadcast on 15 April 2023 to her last on 15 February 2025. She began beside Jungwoo of NCT and Lee Know of Stray Kids, and from November 2023 hosted with Younghoon of THE BOYZ and the actor Lee Jung-ha.
Sullyoon of NMIXX released 'Always', a duet with the singer Parc Jae Jung, at 6 p.m. KST on 25 February 2026. Her agency JYP Entertainment said the collaboration came about after Parc heard her cover of his 'Let's Say Goodbye' on KBS Kpop's Limousine Service in 2023.
NMIXX release their sixth mini album, Strange Muse, at 6 p.m. KST on 19 October. They posted an a cappella highlight medley on the 11th and an original one on the 15th, which first played their first three unit songs. They then close their first world tour in Incheon on 27-29 November.
NMIXX announced on 21 September that their sixth mini album, Strange Muse, would be out at 6 p.m. KST on 19 October 2026. Of its six songs, led by 'Birthday Wish', three are the group's first unit songs, each pair credited on its lyrics. The album came out on 19 October as announced.
NMIXX received Sound of the Year and Artist of the Year at the 2026 THE FACT MUSIC AWARDS in Busan on 19 September 2026, while Sullyoon received FANSTAR MYSTAR (Female).
The French dermo-cosmetics brand Bioderma named Sullyoon of NMIXX its brand ambassador as it brought Atoderm Facial Lotion to Korea on 26 August 2026. Vegan News and BetaNews reported the appointment on 20 August, and the brand's official YouTube channel posted a campaign film with Sullyoon on 24 August.
The reports behind the facts above, for the ones no story on the site covers yet. A row with a story cites its sources there; the act's own channel and a brand's official page are linked in the rows themselves.
