COSRX
COSRX Ultimate Nourishing Rice Overnight Spa Mask
Ingredient analysis and how the ad lines read
Read on 2026-09-16
What is this product?
A 60 ml overnight leave-on mask built around 2 percent niacinamide (a disclosed, functional-cosmetic-filing concentration) and a named rice extract ingredient. The brand's own packaging claims 'more than 68.9 percent' rice extract, but the same brand's own statutory ingredient disclosure for this exact product states 0.722 percent for the same named ingredient, a contradiction between two brand-controlled sources that this record reports without resolving. No INCI list, no pH figure and no fragrance disclosure were found on the surfaces checked.
What makes it different?
A disclosed 2 percent niacinamide concentration tied to a stated whitening-category functional-cosmetic filing, paired with a rice extract concentration claim on the product's own packaging that directly contradicts the brand's own statutory disclosure for the same ingredient.
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.
Key ingredient
- Water
- Butylene Glycol
- Helianthus Annuus (Sunflower) Seed Oil
- Glycerin
- Niacinamide
- Betaine
- Cetearyl Olivate
- 1,2-Hexanediol
- Dimethicone
- Sorbitan Olivate
- Oryza Sativa (Rice) Extract
- Elaeis Guineensis (Palm) Kernel Oil
- Cetearyl Alcohol
- Ethylhexylglycerin
- Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
- Ethyl Hexanediol
- Elaeis Guineensis (Palm) Oil
- Carbomer
- Arginine
- Xanthan Gum
- Allantoin
- Sorbitan Isostearate
- Polysorbate 60
- Tocopherol
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: 세테아릴올리베이트, 솔비탄올리베이트, 솔비탄아이소스테아레이트, 폴리솔베이트60, 오일팜오일, 오일팜커넬오일
Did the ad claims hold up?
We checked 3 lines this product advertises against the ingredient list and public documents. One of them looks likely, though none are proven outright.
Claims translated from Korean, originals preserved.
likely, not proven1
- Niacinamide 2% - Soothes and heals various skin troubles
Korean original
나이아신아마이드 2% - 다양한 피부 트러블 진정 및 치유
no evidence2
- Enriched with more than 68.9% of Rice Extract, this mask provides intensive nourishment with deep moisture and brightening.
- Rice extract - moist and gentle care for sensitized skin
Korean original
쌀 추출물 - 민감해진 피부를 촉촉하고 순하게 케어
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.