ISOI
ISOI 아크니 닥터 1st 스피디 마스크
Ingredient analysis and how the ad lines read
Read on 2026-09-14
What is this product?
A Korean sheet mask from isoi's Acni Doctor 1st line, sold as a 20ml single sheet and listed on the brand storefront as a ten sheet set. Twenty eight ingredients, built almost entirely on water, humectants and plant extracts, with houttuynia sixth, lemon scented tea tree oil seventh and sophora root tenth. Two things matter for fit and both come from the brand's own enumeration: ethanol sits fourth, and citral and citronellol are declared at the end as fragrance allergens carried in by the essential oils. That combination makes the mask a reasonable occasional choice for blemish prone oily skin and a poor one for reactive skin, notwithstanding brand positioning to the contrary. The brand cites a 31 subject irritation test at a named institution over four days in 2021 but publishes no result from it.
What makes it different?
A trouble care sheet mask whose ingredient list openly declares both the ethanol and the two fragrance allergens that its sensitive skin positioning would lead a reader not to expect, and a cited irritation test that names institution, sample and dates while withholding its outcome.
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 2 with no dictionary entry, left in Korean.
Key ingredientWorth a closer look
- Water
- Glycerin
- Betaine
- Alcohol
- Panthenol
- Houttuynia Cordata Extract
- 레몬향티트리오일
- Centella Asiatica Extract
- Rosa Damascena Flower Oil
- 고삼뿌리추출물
- Hippophae Rhamnoides Fruit Extract
- Castanea Crenata (Chestnut) Shell Extract
- Salix Alba (Willow) Bark Extract
- Rosa Damascena Flower Water
- Lactobacillus/Soybean Ferment Extract
- Cinnamomum Cassia Bark Extract
- Origanum Vulgare Leaf Extract
- Chamaecyparis Obtusa Leaf Extract
- Portulaca Oleracea Extract
- Xanthan Gum
- Butylene Glycol
- 1,2-Hexanediol
- Calendula Officinalis Flower Extract
- Scutellaria Baicalensis Root Extract
- Paeonia Suffruticosa Root Extract
- Glycyrrhiza Glabra (Licorice) Root Extract
- Citral
- Citronellol
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: 레몬향티트리오일, 다마스크장미꽃오일, 흰버드나무껍질추출물
Did the ad claims hold up?
We checked 8 lines this product advertises against the ingredient list and public documents. 2 of them hold up. The rest are only partly right or have nothing behind them.
backed by evidence2
- 티트리오일, 약모밀추출물, 비타민나무열매추출물, 고삼뿌리추출물
- ※ 식물유래 에센셜오일 자체에 원래 포함된 성분
likely, not proven1
- *아이소이에서 사용하는 에탄올은 식물발효성분입니다.
partly backed2
- 티트리, 어성초 등 동서양 식물유래 성분이 민감한 피부를 빠르고 편안하게 진정시키는 데 도움을 주고 피부의 기초체력을 강화시키는 데 도움을 줍니다.
- 민감피부 자극테스트 / 대한피부과학연구소 / 2021.7.2~7.5 / 31명
no evidence1
- 중요한 날을 앞두고 피부고민 부위를 잠재울 때, 갑자기 올라온 피부고민을 초기에 가라앉히고 싶을 때, 예민해진 피부를 순하게 진정시키고 싶을 때
evidence says otherwise1
- 피부에 자극을 줄 수 있는 성분은 제외하고 피부에 순한 식물유래 성분만을 담았습니다.
says nothing1
- 내 피부 응급 상황
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.