Isntree
Isntree Onion Newpair Cleansing Foam
Ingredient analysis and how the ad lines read

Read on 2026-09-11
What is this product?
Buy this if you have oily or blemish-prone skin and you want a cleanser that genuinely strips sebum. On top of the soap sits an unusually dense functional block at positions 12 through 17, led by 양파추출물 with its concentration printed at 638.75ppm. Skip it if your skin is dry or your barrier is struggling, because a soap system is alkaline by construction and that is not a formulation detail you can screen around. Two things to know. The brand's own page publishes no ingredient list at all, so the panel here comes from a retail statutory record. And the two headline marketing lines, an acne-suitability test and a 95 percent satisfaction figure, are published with no method, sample size, institute or date behind either.
What makes it different?
A true saponified soap in a market that has largely moved to weak-acid synthetic detergents, which makes the squeaky finish a position rather than a compromise. The other signature is a printed concentration on the hero ingredient, 양파추출물(638.75ppm) at position 12, carried to two decimal places, sitting at the head of six consecutive positions of functional material in a product that gets rinsed off within a minute.
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.
- Water
- Glycerin
- Potassium Myristate
- Stearic Acid
- Potassium Stearate
- Myristic Acid
- Glyceryl Stearate
- Palmitic Acid
- Coco-Betaine
- Potassium Cocoyl Glycinate
- Hydroxypropyl Starch Phosphate
- Allium Cepa (Onion) Bulb Extract
- Sodium Heparin
- Panthenol
- Houttuynia Cordata Extract
- Allantoin
- Tranexamic Acid
- Butylene Glycol
- Sodium C14-16 Olefin Sulfonate
- Sorbitol
- Potassium Benzoate
- Sodium Chloride
- Cetearyl Alcohol
- Coccinia Indica Fruit Extract
- 1,2-Hexanediol
- Eclipta Prostrata Extract
- Melia Azadirachta Leaf Extract
- Melia Azadirachta Flower Extract
- Hydrogenated Polydecene
- Arachidic Acid
- Sodium Citrate
- Trisodium Ethylenediamine Disuccinate
- Oleic Acid
- Solanum Melongena (Eggplant) Fruit Extract
- Lauric Acid
- Ocimum Sanctum Leaf Extract
- Citric Acid
- Curcuma Longa (Turmeric) Root Extract
- Corallina Officinalis Extract
- Sodium Ascorbyl Phosphate
- Disodium EDTA
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: 글리세릴스테아레이트, 미리스틱애씨드, 라우릭애씨드, 세테아릴알코올
Did the ad claims hold up?
We checked 4 lines this product advertises against the ingredient list and public documents. One of them holds up. The rest are only partly right or have nothing behind them.
Claims translated from Korean, originals preserved.
backed by evidence1
- Functional cosmetic: Whether passed review by the Ministry of Food and Drug Safety: Not applicable
Korean original
기능성 화장품 식품의약품안전처 심사필 여부: 해당사항 없음
partly backed2
- Foam cleanser for acne-prone skin (acne-prone skin suitability test completed)
Korean original
여드름성 피부를 위한 폼클렌저(여드름성피부적합테스트 완료)
- Rich and dense foam enables gentle cleansing
Korean original
풍부하고 탄탄한 거품으로 부드러운 세안 가능
no evidence1
- #AcneProneSkinSuitable #ProductSatisfaction95%
Korean original
#여드름성피부적합 #제품만족도95%
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.
What else is worth seeing?
Products we read alongside this one.