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ISOI

ISOI Moisture Doctor Jangsujin Moisture Cream

Ingredient analysis and how the ad lines read

Read on 2026-09-08

What is this product?

Choose this if a tea-tree-ceramide, five-form-hyaluronic-acid cream with a real clinical safety record (irritation, sensitivity and non-comedogenic panels, all named and dated) fits a hydration and barrier-soothing routine. One caveat worth knowing: several of the brand's headline numbers (the 30-layer, 100-hour and SLS-barrier figures) were tested with the line's toner and ampoule used together, not with this cream alone, while a separate, more recent standalone panel exists for similar deep-moisture and redness endpoints. A German Dermatest claim and a 123/121 percent oil-water balance figure in the brand's FAQ text have no matching dated panel entry in the archive and are graded unsupported. One non-brand review population is confirmed, the review-aggregator ranking snapshot node for this cream, and it is disclosed rather than adopted while this entry's ledger join stays open.

What makes it different?

Eleven distinct named, dated, institute-run panels across safety and efficacy, counted across one closed field (the positiveNotes list in one archived page's JSON-LD) rather than across the archive at large, split between a 3-product combo protocol and later cream-only panels, which the brand's own marketing does not clearly separate.

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.

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: Citrus Grandis (Grapefruit) Peel Oil, Sorbitan Sesquioleate, Macadamia Ternifolia Seed Oil

Did the ad claims hold up?

We checked 16 lines this product advertises against the ingredient list and public documents. 8 of them hold up. The rest are only partly right or have nothing behind them.

Claims translated from Korean, originals preserved.

backed by evidence8

  • Helps with skin oil-moisture balance effect (helps maintain oil-moisture balance) (PNK Skin Clinical Research Center, 2024.7.9~7.24, 22 people)
    Korean original

    피부 유수분 밸런스 효과에 도움(유수분평형유지에 도움) (피엔케이피부임상연구센타, 2024.7.9~7.24, 22명)

  • Helps alleviate dead skin cells by 129.91% (PNK Skin Clinical Research Center, 2024.7.9~7.24, 22 people)
    Korean original

    피부 각질 129.91% 완화에 도움 (피엔케이피부임상연구센타, 2024.7.9~7.24, 22명)

  • Helps alleviate fine dead skin cells on the chin area by 172.65% (PNK Skin Clinical Research Center, 2024.7.9~7.24, 22 people)
    Korean original

    턱부위 피부 미세각질 172.65% 완화에 도움 (피엔케이피부임상연구센타, 2024.7.9~7.24, 22명)

  • 30-layer inner moisturizing improvement test (Global Medical Research Center, 2025.5.9~5.12, 21 people)
    Korean original

    30층 속보습 개선 테스트 (글로벌의학연구센터, 2025.5.9~5.12, 21명)

  • Skin soothing (redness/barrier) improvement test (Global Medical Research Center, 2025.5.9~5.12, 21 people)
    Korean original

    피부 진정(붉은기/장벽) 개선 테스트 (글로벌의학연구센터, 2025.5.9~5.12, 21명)

  • Non-comedogenic test (Korea Dermatology Research Institute, 2021.6.7~7.5, 20 people)
    Korean original

    논코메도제닉 테스트 (대한피부과학연구소, 2021.6.7~7.5, 20명)

  • Sensitive skin irritation test (Korea Dermatology Research Institute, 2021.7.2~7.5, 31 people)
    Korean original

    민감 피부 자극테스트 (대한피부과학연구소, 2021.7.2~7.5, 31명)

  • Primary skin irritation test (Korea Dermatology Research Institute, 2021.3.23~3.26, 31 people)
    Korean original

    피부 일차 자극 테스트 (대한피부과학연구소, 2021.3.23~3.26, 31명)

likely, not proven1

  • Moisture Doctor Cream is a water cream with a refreshing feel, suitable for all skin types from dry to oily.
    Korean original

    모이스춰 닥터 크림은 산뜻한 사용감의 수분크림으로 건성부터 지성까지 모든 피부에 적합합니다

partly backed4

  • 30 layers! Inner moisturizing! 100 hours! Barrier moisture soothing
    Korean original

    30층! 속보습! 100시간! 장벽 수분 진정

  • Inner moisturizing improvement (Korea Dermatology Research Institute, 2021.3.22~4.19, 21 people, when using 3 products simultaneously)
    Korean original

    속보습 개선 (대한피부과학연구소, 2021.3.22~4.19, 21명, 3종 동시 사용 시)

  • 100-hour moisturizing lasting power evaluation (Korea Dermatology Research Institute, 2021.3.29~4.2, 22 people, when using 3 products simultaneously)
    Korean original

    100시간 보습 지속력 평가 (대한피부과학연구소, 2021.3.29~4.2, 22명, 3종 동시 사용 시)

  • Damaged skin barrier improvement (SLS irritation) (Korea Dermatology Research Institute, 2021.5.17~5.24, 20 people, when using 3 products simultaneously)
    Korean original

    손상된 피부 장벽 개선(SLS자극) (대한피부과학연구소, 2021.5.17~5.24, 20명, 3종 동시 사용 시)

no evidence3

  • We have completed not only the sensitive skin primary irritation test, but also the primary skin irritation, German derma test, and non-comedogenic test.
    Korean original

    민감성 피부 일차 자극 테스트는 물론, 피부 일차 자극, 독일더마테스트, 논코메도제닉 테스트까지 완료하였습니다

  • This cream helps with oil-moisture balance care, based on completed clinical trials showing 123.38% improvement in oil (sebum) and 121.58% improvement in moisture (moisturizing).
    Korean original

    유분(피지) 123.38% 개선과 수분(보습) 121.58% 개선 임상시험을 완료하여 유수분 밸런스 케어에 도움을 주는 크림입니다

  • Vegan
    Korean original

    비건

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