COSRX Lightweight Soothing Moisturizer Review

COSRX Lightweight Soothing Moisturizer
5.0
/ 10
Moisturizing
10.0 Humectancy icon Humectancy
0.0 Occlusivity icon Occlusivity
5.2Anti-wrinkle icon/ 10
Anti-wrinkle
Rich
in Antioxidants
Rich Skin Soothing icon
in Skin Soothers
Review

Does COSRX Lightweight Soothing Moisturizer Work?

 
According to CreamScan AI's analysis of the ingredient list, here’s what COSRX Lightweight Soothing Moisturizer has to offer:
 
  • Strong humectant moisturizing. This lightweight, humectant-rich product, ideal for oily skin, has a moisturizing rating of 5.0 out of 10.
  • Considerable anti-wrinkle efficacy: COSRX Lightweight Soothing Moisturizer has an anti-wrinkle rating of 5.2 out of 10, indicating a moderate ability to reduce wrinkles.
  • Soothing: COSRX Lightweight Soothing Moisturizer contains a high concentration of soothing ingredients, which may help to reduce irritation and calm the skin.
  • Antioxidant protection.

Key Benefits of COSRX Lightweight Soothing Moisturizer

 
These are the key benefits you can expect from using COSRX Lightweight Soothing Moisturizer:
 

Lightweight Purely Humectant Moisturizing, Ideal for Oily Skin

According to CreamScan analysis, COSRX Lightweight Soothing Moisturizer is quite moisturizing, with a moisturizing rating of 5.0 out of 10.

Is it more humectant or occlusive? It is purely humectant. It has zero occlusivity (we didn't find any occlusive ingredients on the ingredient list) and a maximum humectancy of 10 out of 10, primarily due to the high content of Butylene Glycol (est. ≈4.0%) and Glycerin (est. ≈2.5%).

This humectant-rich product, when used alone as a moisturizer, is ideal for oily skin, providing significant hydration in a lightweight, fast-absorbing formula without any occlusive ingredients.

Tip: Certain studies suggest that humectants alone may not effectively moisturize the skin. If you use this product as your only moisturizer, we recommend following it with one that contains at least some occlusive ingredients.

A Humectant Boost for Any Skincare Routine

But it’s not limited to 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.

Considerable Anti-Wrinkle Efficacy

According to CreamScan analysis, COSRX Lightweight Soothing Moisturizer has a moderate anti-wrinkle rating of 5.2 out of 10.

It contains 2 active ingredients with proven anti-wrinkle efficacy:

  • Asiaticoside (est. ≈0.3%),
     derived from the plant Centella asiatica, an ingredient with moderate anti-wrinkle efficacy, as confirmed by a single clinical study involving 27 participants (Lee et al.). This study demonstrated that a cream containing 0.1% asiaticoside reduced the average wrinkle depth by 8% after 12 weeks of use, compared to a vehicle (the same formulation without asiaticoside).
  • Niacinamide (est. ≈1.5%),
     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).
Among others, COSRX Lightweight Soothing Moisturizer also contains contains Asiatic Acid and Madecassic Acid, two ingredients often marketed as effective in reducing wrinkles. However, the studies supporting the anti-wrinkle claims of these ingredients provide insufficient evidence of efficacy according to CreamScan Research Evaluation Standards. Therefore, these ingredients do not contribute to the anti-wrinkle rating.
 
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.

Rich in Skin-Protecting Antioxidants

We estimate that COSRX Lightweight Soothing Moisturizer is rich (> 3%) in antioxidants, specifically Propolis Extract (est. ≈65.0%).

A key benefit of antioxidants is their ability to reduce oxidative stress caused by free radicals and therefore prevent accelerated skin aging. Studies also show that antioxidants can protect against environmental damage such as UV radiation and pollution, and help reduce inflammation and skin redness.

Skin Soothing and Calming Potential

Based on the ingredient list analysis, COSRX Lightweight Soothing Moisturizer is rich (> 5%) in soothing ingredients, particularly Propolis Extract (est. ≈65.0%).

When applied to the skin, compounds of soothing ingredients, such as triglycerides, phospholipids, fatty acids, phenolic compounds, and antioxidants, work together to soothe the skin through various mechanisms: reducing inflammation, promoting wound healing, repairing the skin barrier, and providing antimicrobial and antioxidant activities.

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.

Things to Be Aware Of: COSRX Lightweight Soothing Moisturizer

 
CreamScan AI identified a few things to consider before adding COSRX Lightweight Soothing Moisturizer to your skincare routine:
 

If It’s Your Only Moisturizer, It Needs to Be Paired with Some Occlusives

While humectants are highly effective at attracting water to the skin, studies (J. N. Kraft, C. W. Lynde) suggest they may not be efficient when used alone.

One major drawback of purely humectant moisturization is that the water attracted by humectants to the upper layers of the skin can evaporate completely into the environment through transepidermal water loss (TEWL). Adding occlusive ingredients helps seal this moisture into the skin and prevent further water loss.

If you’re using COSRX Lightweight Soothing Moisturizer as your only moisturizer, consider pairing it with one that contains at least some occlusive ingredients, such as oils, butters, or silicones. These work alongside humectants to create a protective barrier, locking in hydration and ensuring longer-lasting moisturization. The amount of occlusive needed depends on your skin type - the drier the skin, the more occlusives it requires.

If this product is used not as a standalone moisturizer but as part of your skincare routine, such as a toner or serum, it should be applied before your main moisturizer (unless it's a sunscreen), which will provide the necessary occlusivity on top of it.

Pros & Cons of COSRX Lightweight Soothing Moisturizer

 
Here’s an overview of the pros and cons of COSRX Lightweight Soothing Moisturizer to help you decide if it’s the right choice for your skincare routine:
 

Pros:

  • Humectant-rich moisturizing ideal for oily skin
  • Lightweight texture
  • A humectant moisturizing boost for any skincare routine
  • Provides considerable anti-wrinkle efficacy
  • Rich in antioxidants that combat oxidative stress associated with accelerated skin aging and defend against environmental damage such as UV radiation and pollution
  • Contains a high concentration of soothing ingredients, which may help reduce irritation and soothe the skin

Cons: 

  • Needs occlusives to seal in humectants if used as a standalone moisturizer

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
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Est. %
Propolis Extract
Function:
Origin:
Aloe Barbadensis Leaf Water
Function:
Origin:
Camellia Sinensis Leaf Water
Function:
Origin:
Butylene Glycol
Function:
Origin:
Cetyl Ethylhexanoate
Function:
Origin:
Glycerin
Function:
Origin:
1,2-Hexanediol
Function:
Origin:
Niacinamide
Function:
Origin:
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Function:
Origin:
Cyclomethicone
Function:
Origin:
Cetearyl Olivate
Function:
Origin:
Betaine
Function:
Origin:
Cetearyl Alcohol
Function:
Origin:
Sorbitan Olivate
Function:
Origin:
Panthenol
Function:
Origin:
Ethylhexylglycerin
Function:
Origin:
Allantoin
Function:
Origin:
Xanthan Gum
Function:
Origin:
Dimethicone/Vinyl Dimethicone Crosspolymer
Function:
Origin:
Sodium Hyaluronate
Function:
Origin:
Arginine
Function:
Origin:
Zinc PCA
Function:
Origin:
Betaine Salicylate
Function:
Origin:
Mentha Haplocalix Extract
Function:
Origin:
Menthyl Lactate
Function:
Origin:
Citric Acid
Function:
Origin:
Melaleuca Alternifolia (Tea Tree) Leaf Oil
Function:
Origin:
Asiaticoside
Function:
Origin:
Asiatic Acid
Function:
Origin:
Madecassic Acid
Function:
Origin:

Ratings

All humectants
10.1
4
2.5
1.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Benchmark
10
All occlusives
0.0
None
Benchmark
20
Moisturizing rating
5.0
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 10.1 10
10.0
4
2.5
1.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Occlusivity All occlusives 0.0 20
0.0
None
Moisturizing rating
5.0
Ingredient Est. % Benchmark Humectancy
4
2.5
1.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
All humectants 10.1 10
10
All humectants
10.1
4
2.5
1.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
None
All occlusives 0.0 20
0.0
All occlusives
0.0
None
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
3 /10 0.1 0.3 3
6 /10 4 1.5 2.2
n/a
- 0.3 -
n/a
- 0.3 -
Total
5.2
Asiaticoside
3
Ingredient anti-wrinkle power
3 /10
when present at, %
0.1
in this formula, est. %
0.3
Niacinamide
2.2
Ingredient anti-wrinkle power
6 /10
when present at, %
4
in this formula, est. %
1.5
Asiatic Acid
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
0.3
Madecassic Acid
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
0.3
Anti-wrinkle rating
5.2
Ingredient Est. % Benchmark
Rich in Antioxidants
65
1.5
0.3
0.3
0.3
All antioxidants 67.4 3 Rich in antioxidants
All antioxidants
67.4
Propolis Extract
65
Niacinamide
1.5
Asiaticoside
0.3
Sodium Hyaluronate
0.3
Melaleuca Alternifolia (Tea Tree) Leaf Oil
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
65
1.5
0.3
0.3
0.3
All soothing 67.4 5 Rich in soothing
All soothing
67.4
65
1.5
0.3
0.3
0.3
Benchmark
5

Ingredients explained

Propolis Extract
Est. %65
Function
Origin
Propolis ExtractA famous bee product that has traditionally been used to treat inflammation and wounds. The extract is soothing and promotes skin healing.
Aloe Barbadensis Leaf Water
Est. %9
Function
Origin
Aloe Barbadensis Leaf WaterA fragrant extract derived from the leaves of aloe vera. It has a fresh, green scent and is used as a formula base.
Camellia Sinensis Leaf Water
Est. %6
Function
Origin
Camellia Sinensis Leaf Water
Butylene Glycol
Est. %4
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.

Cetyl Ethylhexanoate
Est. %3
Function
Origin
Cetyl EthylhexanoateA clear, pale yellow liquid, that functions as an emollient and a solvent, meaning that it is useful for dissolving oil-soluble ingredients.
Glycerin
Est. %2.5
Function
Origin
Glycerin

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

1,2-Hexanediol
Est. %2
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.
Niacinamide
Est. %1.5
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.

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Est. %1.3
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.
Cyclomethicone
Est. %1
Function
Origin
CyclomethiconeA blend of emollient silicones that leaves a smooth and non-greasy after-feel. Unlike other types of oils, it does not leave any residue on the skin, which is part of what makes it so popular.
Cetearyl Olivate
Est. %0.3
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.

Betaine
Est. %0.3
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.
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.
Sorbitan Olivate
Est. %0.3
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).
Panthenol
Est. %0.3
Function
Origin
PanthenolA popular soothing and moisturizing derivative of vitamin B5. Panthenol is particularly beneficial for dry, flaking, burned, or damaged skin. It is used to alleviate the symptoms of a rash, dermatitis, eczema, chapped lips, and sunburn.
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.
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.
Dimethicone/Vinyl Dimethicone Crosspolymer
Est. %0.3
Function
Origin
Dimethicone/Vinyl Dimethicone CrosspolymerThis ingredient can refer to several kinds of dimethicone crosspolymers. Like other silicones, it makes products feel slippery and non-greasy but can also increase the thickness or improve the water-resistance of a formula.
Sodium Hyaluronate
Est. %0.3
Function
Origin
Sodium Hyaluronate

A sodium salt of famous hyaluronic acid. A potent humectant that hydrates the skin, supports collagen function, and fills out small wrinkles. Sodium hyaluronate also offers soothing and antioxidant properties.

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.
Zinc PCA
Est. %0.3
Function
Origin
Zinc PCAA two-part ingredient: Zinc helps to control sebum and bacteria in acne-prone skin, while skin-identical PCA is a moisturizing humectant. Zinc PCA may even boost collagen production and so is researched as a potential anti-wrinkle ingredient.
Betaine Salicylate
Est. %0.3
Function
Origin
Betaine Salicylate
Mentha Haplocalix Extract
Est. %0.3
Function
Origin
Mentha Haplocalix Extract
Menthyl Lactate
Est. %0.3
Function
Origin
Menthyl LactateA derivative of menthol that has the same fresh, cooling effect on the skin, but that is less sensitizing and doesn’t have the strong mint scent of menthol.
Citric Acid
Est. %0.3
Function
Origin
Citric AcidA gently exfoliating AHA that helps to remove the top layer of dead skin cells. In comparison to other AHAs, citric acid has been shown to be one of the least effective. It is also very commonly used as a stabilizing and pH-controlling agent.
Melaleuca Alternifolia (Tea Tree) Leaf Oil
Est. %0.3
Function
Origin
Melaleuca Alternifolia (Tea Tree) Leaf OilA fragrant and antioxidant essential tea tree oil praised for its antiseptic and antimicrobial properties. Tea tree oil helps to treat acne, inflamed skin, and small wounds. It might, however, cause allergies and skin irritations.
Asiaticoside
Est. %0.3
Function
Origin
Asiaticoside

A Gotu Kola or Centella Asiatica derivative with confirmed anti-wrinkle efficacy.

Asiatic Acid
Est. %0.3
Function
Origin
Asiatic AcidA compound isolated from Gotu Kola, a promising anti-wrinkle medicinal plant from Southeast Asia. It is claimed to increase the production of collagen and help with the wound healing process.
Madecassic Acid
Est. %0.3
Function
Origin
Madecassic AcidAn isolated bioactive compound from Gotu Kola. It increases collagen and hyaluronic acid production in the skin and helps to treat wounds, scars, and burns.