COSRX Ultimate Nourishing Rice Overnight Spa Mask Review

COSRX Ultimate Nourishing Rice Overnight Spa Mask
6.6
/ 10
Moisturizing
10.0 Humectancy icon Humectancy
3.3 Occlusivity icon Occlusivity
3.8Anti-wrinkle icon/ 10
Anti-wrinkle
Review

Does COSRX Ultimate Nourishing Rice Overnight Spa Mask Work?

 
According to CreamScan AI's analysis of the ingredient list, here’s what COSRX Ultimate Nourishing Rice Overnight Spa Mask has to offer:
 
  • Significant moisturizing. It has a moisturizing rating of 6.6 out of 10.
  • Modest anti-wrinkle efficacy: COSRX Ultimate Nourishing Rice Overnight Spa Mask has an anti-wrinkle rating of 3.8 out of 10 so you may expect some, although limited, effect on wrinkles.

Key Benefits of COSRX Ultimate Nourishing Rice Overnight Spa Mask

 
These are the key benefits you can expect from using COSRX Ultimate Nourishing Rice Overnight Spa Mask:
 

Lightweight Moisturizer Perfect for Combination and Oily Skin

According to CreamScan analysis, COSRX Ultimate Nourishing Rice Overnight Spa Mask is highly moisturizing, with a moisturizing rating of 6.6 out of 10.

Is it more humectant or occlusive? Significantly more humectant. It has a maximum humectancy of 10 out of 10, primarily due to the substantial concentration of Butylene Glycol (est. ≈9.0%) and Glycerin (est. ≈6.0%), and a moderate occlusivity of 3.3 out of 10, mainly due to the high content of Helianthus Annuus (Sunflower) Seed Oil (est. ≈4.0%) and Dimethicone (est. ≈2.0%).

This type of moisturizer is ideal for people with combination and oily skin who want maximum hydration in a relatively lightweight, non-greasy formula. It combines a significant amount of humectants with a limited amount of occlusive ingredients to boost moisturizing efficacy without feeling too heavy.

This product may also be a good choice for people with normal skin who prefer fast-absorbing textures, as it balances significant moisturizing potential with a relatively lightweight texture.

A Humectant Boost for Any Skincare Routine

But it’s not limited to combination and oily skin - such a humectant boost will also positively contribute to the moisturizing efficacy of any skincare routine when used as a step before applying the main moisturizer. This type of formulation is typically used in serums, where a light, fast-absorbing texture is key.

Please refer to the Ratings section below for details of the moisturizing rating calculation.

Modest Anti-Wrinkle Efficacy

According to CreamScan analysis, COSRX Ultimate Nourishing Rice Overnight Spa Mask has a modest level of anti-wrinkle efficacy, rated 3.8 out of 10.

It contains one ingredient with proven anti-wrinkle efficacy: Niacinamide (est. ≈2.5%), 
 one of the most effective and well-researched anti-wrinkle ingredients. A clinical study involving 30 participants (Kawada et al.) confirmed that a cream with 4% niacinamide reduced the average depth of wrinkles around the eyes by 9% after 8 weeks of use, compared to a vehicle (the same formulation without niacinamide).
 
Moisturizers, when used regularly, are proven to prevent wrinkle formation and even reduce existing wrinkles. Therefore, this product, like any other moisturizer, can deliver some anti-wrinkle effects through its moisturizing action.
 

Please refer to the Ratings section below for details of the anti-wrinkle rating calculation.

Please note that this is not a complete list of benefits. We are in the process of enhancing our AI model to incorporate anti-pigmentation, exfoliation and anti-acne ratings.

Pros & Cons of COSRX Ultimate Nourishing Rice Overnight Spa Mask

 
Here’s an overview of the pros and cons of COSRX Ultimate Nourishing Rice Overnight Spa Mask to help you decide if it’s the right choice for your skincare routine:
 

Pros:

  • When used alone: Provides humectant-rich moisturizing perfect for combination and oily skin
  • Also a good choice for people with normal skin who prefer fast-absorbing textures
  • As part of a routine: A humectant moisturizing boost, beneficial for any skin type
  • Lightweight texture
  • Offers modest anti-wrinkle efficacy

Cons: 

  • We couldn't find any

Ingredients

Est. % Ingredient Origin Functions
65
9
6
4
3
2.5
2
1.5
1.3
1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Est. %
Oryza Sativa (Rice) Extract
Function:
Origin:
Butylene Glycol
Function:
Origin:
Glycerin
Function:
Origin:
Helianthus Annuus (Sunflower) Seed Oil
Function:
Origin:
Betaine
Function:
Origin:
Niacinamide
Function:
Origin:
Dimethicone
Function:
Origin:
1,2-Hexanediol
Function:
Origin:
Cetearyl Olivate
Function:
Origin:
Sorbitan Olivate
Function:
Origin:
Elaeis Guineensis (Palm) Oil
Function:
Origin:
Elaeis Guineensis (Palm) Kernel Oil
Function:
Origin:
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Function:
Origin:
Cetearyl Alcohol
Function:
Origin:
Ethylhexylglycerin
Function:
Origin:
Arginine
Function:
Origin:
Carbomer
Function:
Origin:
Allantoin
Function:
Origin:
Xanthan Gum
Function:
Origin:

Ratings

All humectants
21.4
9
6
3
2.5
0.3
0.3
0.3
Benchmark
10
All occlusives
6.6
4.0
2.0
0.3
0.3
Benchmark
20
Moisturizing rating
6.6
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 21.4 10
10.0
9
6
3
2.5
0.3
0.3
0.3
Occlusivity All occlusives 6.6 20
3.3
4.0
2.0
0.3
0.3
Moisturizing rating
6.6
Ingredient Est. % Benchmark Humectancy
9
6
3
2.5
0.3
0.3
0.3
All humectants 21.4 10
10
All humectants
21.4
9
6
3
2.5
0.3
0.3
0.3
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
4
2
0.3
0.3
All occlusives 6.6 20
3.3
All occlusives
6.6
4.0
2.0
0.3
0.3
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
6 /10 4 2.5 3.8
Total
3.8
Niacinamide
3.8
Ingredient anti-wrinkle power
6 /10
when present at, %
4
in this formula, est. %
2.5
Anti-wrinkle rating
3.8
Ingredient Est. % Benchmark
Rich in Antioxidants
2.5
All antioxidants 2.5 3 No
All antioxidants
2.5
Niacinamide
2.5
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
2.5
0.3
All soothing 2.8 5 No
All soothing
2.8
2.5
0.3
Benchmark
5

Ingredients explained

Oryza Sativa (Rice) Extract
Est. %65
Function
Origin
Oryza Sativa (Rice) ExtractAn abrasive rice extract rich in various emollient fatty acids, amino acids, and vitamin E.
Butylene Glycol
Est. %9
Function
Origin
Butylene Glycol

A clear, colorless liquid humectant that draws moisture to the skin. The humectancy of butylene glycol, owed to its two hydroxyl groups, is quite considerable, although not as powerful as glycerin, which contains three hydroxyl groups.

Glycerin
Est. %6
Function
Origin
Glycerin

The most popular moisturizing ingredient in the world. It is a powerful humectant – cheap yet very effective.

Helianthus Annuus (Sunflower) Seed Oil
Est. %4
Function
Origin
Helianthus Annuus (Sunflower) Seed OilA fatty oil expressed from sunflower seeds and one of the most commonly used oils in skincare. It has great emollient and occlusive moisturizing properties. Sunflower oil is one of the richest sources of vitamin E – an important skin antioxidant.
Betaine
Est. %3
Function
Origin
BetaineAn ingredient derived from the sucrose in sugar beets. It has a negative chemical charge and a positive chemical charge on the same molecule. This allows betaine to be hygroscopic or humectant and thus provide moisturization by drawing water to the skin.
Niacinamide
Est. %2.5
Function
Origin
Niacinamide

Also known as vitamin B3, this ingredient is a true superstar with confirmed moisturizing, anti-acne, hyperpigmentation, and antioxidant benefits. Two studies confirm its significant anti-wrinkle efficacy.

Dimethicone
Est. %2
Function
Origin
DimethiconeThe most common silicone in skincare. It forms a silky, smooth film on the skin’s surface and can help to prevent water loss. It also aids in wound healing and can treat and soften scars. Dimethicone is considered to be very safe for use.
1,2-Hexanediol
Est. %1.5
Function
Origin
1,2-HexanediolA multi-functional formula helper. It is a well-studied preservtive against bacteria and can help pigments and fragrances disperse evenly in a formula.
Cetearyl Olivate
Est. %1.3
Function
Origin
Cetearyl Olivate

A multifunctional ingredient derived from plants that primarily serves as an emulsifier. Supplied as a waxy ivory-colored flake, it can also be used as an emollient and slip modifier that gives a product an overall light, silky finish.

Sorbitan Olivate
Est. %1
Function
Origin
Sorbitan OlivateAn ester of sorbitol (a type of sugar alcohol) and olive oil fatty acids. It is used as an emulsifying agent to stabilize oil droplets in water (or vice versa).
Elaeis Guineensis (Palm) Oil
Est. %0.3
Function
Origin
Elaeis Guineensis (Palm) OilA fatty oil expressed from the pulp of the oil palm fruits. It is mostly composed of occlusive and emollient saturated fatty acids. The unrefined oil has a large amount of antioxidant carotenoids.
Elaeis Guineensis (Palm) Kernel Oil
Est. %0.3
Function
Origin
Elaeis Guineensis (Palm) Kernel Oil
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Est. %0.3
Function
Origin
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate CopolymerAn emulsion stabilizer and thickener that helps to create a pleasant, satiny, and light formula texture. It works by forming a gel-like network within water or oil, which both stabilizes other ingredients and produces a thickening effect.
Cetearyl Alcohol
Est. %0.3
Function
Origin
Cetearyl AlcoholA blend of cetyl alcohol and stearyl alcohol, the fatty alcohols that are derived from palm oil. It helps to create emulsions that give off a soft and silky emollient feel and also increase product thickness.
Ethylhexylglycerin
Est. %0.3
Function
Origin
EthylhexylglycerinA preservative booster derived from glycerin. It is commonly paired with other preservatives to improve their efficacy. Ethylhexylglycerin is also a humectant due to its chemical base of glycerin.
Arginine
Est. %0.3
Function
Origin
ArginineA humectant amino acid used to attract water to the skin’s surface. It is a part of the skin's Natural Moisturizing Factor, a mixture of various compounds that keeps the skin’s surface well hydrated. Arginine can also be used as a pH adjuster.
Carbomer
Est. %0.3
Function
Origin
CarbomerA synthetic ingredient with the ability to gel water. When used in emulsions, such as lotions and creams, carbomer can also act as an emulsion stabilizer.
Allantoin
Est. %0.3
Function
Origin
AllantoinA fluffy, white powder that acts as a humectant due to its water-loving chemistry and as an exfoliant that helps to remove dead skin cells. It has also been shown to be very soothing to irritated and inflamed skin.
Xanthan Gum
Est. %0.3
Function
Origin
Xanthan GumA natural multi-functional ingredient that originates from fermented sugars. Xanthan gum acts as a viscosity-building agent to thicken skincare products. It is also an excellent stabilizer and works well to hold other ingredients together.