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YUNJAC

YUNJAC SKIN PERFECTING PREP CREAM

Ingredient analysis and how the ad lines read

Read on 2026-09-19

What is this product?

A Korean gel cream from YUNJAC, the Shinsegae International brand, sold in 80ml as the last skincare step before makeup. The printed Korean list runs 61 items and leads with water, dimethicone, glycerin and propanediol, with niacinamide sixth and adenosine, sodium hyaluronate, panthenol, Centella leaf extract, squalane, ceramide NP and phosphatidylcholine further down, plus a set of ferment and rice derived extracts. Texture materials point at a semi matte soft focus finish: dry emollients, several film formers and a silica like silicone powder. Exfoliation is enzymatic rather than acidic, through protease. The list ends with declared fragrance and four fragrance allergens. The brand cites a 22 subject human application study from a named test house for three percentage figures, without naming instruments or baselines.

What makes it different?

Two things set it apart from a plain hydrating cream. It resurfaces with an enzyme, protease, rather than with an acid, which is an unusual choice in a leave on cream and changes who can use it alongside a retinoid routine. And it is built to be worn under foundation rather than to be a final night cream, with dimethicone in position two and a soft focus powder that read as grip and shine control rather than as richness.

What is in it?

The full ingredient list as the brand publishes it, in the printed order. Each name links to what we know about that ingredient.

This brand publishes its ingredient list in Korean only. Names below are the matching INCI names from the Korean Cosmetic Association ingredient dictionary, except 1 with no dictionary entry, left in Korean.

Key ingredientWorth a closer look

Ingredients with no mark are ones we found nothing notable about, and when marks overlap on one ingredient we show the caution first.

We could not place these in the list above: 폴리글리세릴-10스테아레이트, C12-20알킬글루코사이드, 시어버터, 메도우폼씨오일

Did the ad claims hold up?

We checked 8 lines this product advertises against the ingredient list and public documents. 2 of them look likely, though none are proven outright.

Claims translated from Korean, originals preserved.

likely, not proven2

  • Delicately refines rough and lifted dead skin cells to make the skin's natural texture even smoother and more refined,
    Korean original

    거칠고 들뜬 각질을 섬세하게 정돈해 피부 본연의 결을 한층 매끄럽고 정교하게 가꾸고,

  • Leaves abundant moisture while removing unnecessary oiliness. The refreshing watery gel texture softly penetrates the skin, providing a comfortable skin condition without burden throughout the day.
    Korean original

    풍부한 수분감은 남기고 불필요한 유분감은 덜어내줍니다. 산뜻한 워터리 젤 텍스처가 피부에 부드럽게 스며들어, 하루 종일 부담 없이 쾌적한 피부 컨디션을 선사합니다.

partly backed3

  • Hwajalmeok Moisture Barrier Cream providing powerful moisturization and barrier care
    Korean original

    강력한 보습과 장벽 케어를 선사하는 화잘먹 수분결 크림

  • Immediately after use, skin dead cell improvement 71%*
    Korean original

    사용 직후 피부 각질 개선 71%*

  • After 2 weeks of use, moisture barrier density improvement 117%
    Korean original

    사용 2주 후 보습 장벽 밀도 개선 117%

overstated ad line1

  • Deep moisturization in 30 layers of the stratum corneum 630%
    Korean original

    피부 각질층 30층 속보습 630%

no evidence1

  • Barrier Glue Complex™ densely fills the gaps between damaged skin barriers, completing a more resilient skin base and helping makeup blend seamlessly and naturally afterwards.
    Korean original

    Barrier Glue Complex™가 손상된 피부 장벽 사이의 빈틈을 촘촘하게 채워주어 더욱 탄탄한 피부 바탕을 완성해 이후 메이크업이 빈틈없이 자연스럽게 어우러지도록 돕습니다.

says nothing1

  • Combining 5 types of K-heritage plant fermented extracts with exclusive ingredients from the Skin Perfecting line, it is a unique ingredient exclusive to Yunjac that maintains a comfortable and seamless skin base over time.
    Korean original

    K-헤리티지 식물 발효 추출물 5종과 스킨 퍼펙팅 라인의 독점 성분을 결합해 오랜 시간 편안하고 빈틈없는 피부 바탕을 유지해주는 연작만의 독자적인 성분입니다.

Each line is quoted as the brand published it, and each one was read on its own against the ingredient list and the documents the brand publishes.

How we read these lines