COSRX

COSRX Oil-Free Ultra Moisturising Lotion with Birch Sap

Name: COSRX - Oil-Free Ultra Moisturising Lotion with Birch Sap
Brand: COSRX

Efficacy33/100IrritancyLow

See all ingredients 100% recommend: 7 reviews In 38 routines

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Works for

1 of 3 advertised claims delivered

Moisturizing

Panthenol, Dimethicone + 8 more

Strong evidence

What the product description says

“Oil-Free Ultra Moisturising Lotion with Birch Sap”

Source: Cosrx

This product can help improve hydration of the skin with the two types of ingredients.

The first type is called “humectants”:
these ingredients help attract water. When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. The following ingredients in this product do the job: betaine, glycerin.

This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: dimethicone, cetearyl alcohol.

The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: panthenol

DimethiconeKey active· Emollient, OcclusiveEffect: HighA silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish~4–6%

Sodium hyaluronateKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin~0.15–0.65%

Sodium lactateKey active· HumectantEffect: HighHelps attract water to the upper layer of the skin. Is often used to adjust the pH level of the product~0.15–0.55%

PanthenolHero· HumectantEffect: HighHelps attract water to the upper layer of the skin and can help improve skin barrier function~0.3–0.75%

BetaineKey active· HumectantEffect: HighHelps attract water to the upper layer of the skin and improves the product texture~2.7–4.1%

GlycerinKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant~4.1–6.2%

Cetearyl alcoholKey active· EmollientEffect: MediumA non-drying alcohol. Works as an emollient. Helps water and oil mix together and creates a nice product texture~2.1–3.1%

Butylene glycol· HumectantEffect: LowUsed to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin~4.8–7.2%

AllantoinUnder-dosedEffect: HighHelps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated~0.35–0.8%

TocopherolEffect: Low, below effective dosePure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself~0.1–0.45%

Anti-blemish

Allantoin

Weak evidence

What the product description says

“Recommended for sensitive, oily or acne-prone skin, this watery moisturizer is enriched with all-natural birch sap to improve hydration levels in skin while maintaining oil and water balance to prevent excess sebum production and further breakouts.”

Source: Yesstyle

Effective ingredients missing or their concentration is too low.

AllantoinEffect: Low, below effective doseHelps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated~0.35–0.8%

Evens skin tone

No ingredient credited for this claim

No evidence

What the product description says

“Recommended for sensitive, oily or acne-prone skin, this watery moisturizer is enriched with all-natural birch sap to improve hydration levels in skin while maintaining oil and water balance to prevent excess sebum production and further breakouts. The result is calmer, soother skin with an improved texture and tone.”

Source: Yesstyle

Effective ingredients missing or their concentration is too low

Can it cause trouble?

Irritancy

6 flagged ingredients

Low risk

We flag 6 ingredients with irritancy potential; the product's overall irritancy is low. The table lists each ingredient's own rating.

IngredientFunctionIrritationEst. amount

Ethyl hexanediolUsed to dissolve other ingredients. Might be irritatingHigh~0.5–1.15%est.

1,2-hexanediolA preservativeMedium~0.5–1.2%est.

EthylhexylglycerinA preservativeMedium~0.85–1.3%est.

Hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymerA gelling agent that thickens the product consistency and leaves the skin with a velvety finishMedium~0.55–1.3%est.

Sodium lactateHelps attract water to the upper layer of the skin. Is often used to adjust the pH level of the productMedium~0.15–0.55%est.

Polysorbate 60Helps oil and water mix togetherMedium~0.1–0.45%est.

Comedogenic

1 ingredient rated 2 or more on the 0–5 pore-clogging scale

1 flagged

These ingredients have a comedogenic rating of 2 or more on a 0–5 scale; the table shows each one's rating. In leave-on products they can clog pores in acne-prone skin.

IngredientFunctionRatingEst. amount

Cetearyl alcoholA non-drying alcohol. Works as an emollient. Helps water and oil mix together and creates a nice product texture2/5~2.1–3.1%est.

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Alternatives

Cheaper, or higher on efficacy

Dr.Reju-All Advanced PDRN Rejuvenating Cream Max

Higher efficacy · 100/10058% match

$66.71

preange Vit B5 Emulsion

Higher efficacy · 100/10057% match

$21.15

View all alternatives

User reviews

Would you recommend?

100%·yes

7 of 7 community members would buy it again.

100% would0% wouldn't

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What reviewers noticed

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Ingredients

Filter by role to see what each ingredient is doing.

Betula platyphylla japonica juice~22–33%

Formula

Irritation risk: Low

More about Betula platyphylla japonica juice

Butylene glycol~4.8–7.2%

Formula

Irritation risk: Low

Works for

Moisturizing

Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin

More about Butylene glycol

Glycerin~4.1–6.2%

Key active

Irritation risk: Low

Works for

Moisturizing

One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant

More about Glycerin

Dimethicone~4–6%

Key active

Irritation risk: Low

Works for

MoisturizingMattifying

A silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish

More about Dimethicone

Betaine~2.7–4.1%

Key active

Irritation risk: Low

Works for

Moisturizing

Helps attract water to the upper layer of the skin and improves the product texture

More about Betaine

Cetearyl alcohol~2.1–3.1%

Key activeComedogenic 2/5

Irritation risk: Low
Comedogenicity: 2/5

Works for

CleansingMoisturizing

A non-drying alcohol. Works as an emollient. Helps water and oil mix together and creates a nice product texture

More about Cetearyl alcohol

1,2-hexanediol~0.5–1.2%

Irritant · medium

Irritation risk: Medium

A preservative

More about 1,2-hexanediol

Cetearyl olivate~1.2–1.9%

Formula

Irritation risk: Low

Works for

Cleansing

Helps oil and water mix together

More about Cetearyl olivate

Sorbitan olivate~1–1.5%

Formula

Irritation risk: Low

Works for

Cleansing

Helps oil and water mix together

More about Sorbitan olivate

Ethylhexylglycerin~0.85–1.3%

Irritant · medium

Irritation risk: Medium

A preservative

More about Ethylhexylglycerin

Hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer~0.55–1.3%

Irritant · medium

Irritation risk: Medium

A gelling agent that thickens the product consistency and leaves the skin with a velvety finish

More about Hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer

Ethyl hexanediol~0.5–1.15%

Irritant · high

Irritation risk: High

Used to dissolve other ingredients. Might be irritating

More about Ethyl hexanediol

Xanthan gum~0.4–1%

Formula

Irritation risk: Low

Works for

Cleansing

Used to create a thicker product consistency

More about Xanthan gum

Allantoin~0.35–0.8%

Under-dosed

Irritation risk: Low

Works for

Anti-inflammatoryMoisturizingReduces rednessAnti-blemishReduces irritationExfoliation

Helps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated

More about Allantoin

Panthenol~0.3–0.75%

Hero · Moisturizing

Irritation risk: Low

Works for

Reduces rednessMoisturizingReduces irritation

Helps attract water to the upper layer of the skin and can help improve skin barrier function

More about Panthenol

Water~0.3–0.7%

Formula

Irritation risk: Low

Plain old water

More about Water

Sodium hyaluronate~0.15–0.65%

Key active

Irritation risk: Low

Works for

Moisturizing

One of the best moisturizing ingredients. Attracts water into the upper layer of the skin

More about Sodium hyaluronate

Sodium lactate~0.15–0.55%

Key activeIrritant · medium

Irritation risk: Medium

Works for

Moisturizing

Helps attract water to the upper layer of the skin. Is often used to adjust the pH level of the product

More about Sodium lactate

Sorbitan isostearate~0.15–0.5%

Formula

Irritation risk: Low

Works for

Cleansing

Helps oil and water mix together

More about Sorbitan isostearate

Polysorbate 60~0.1–0.45%

Irritant · medium

Irritation risk: Medium

Works for

Cleansing

Helps oil and water mix together

More about Polysorbate 60

Tocopherol~0.1–0.45%

Formula

Irritation risk: Low

Works for

Anti-oxidationMoisturizingAnti-inflammatoryAnti-aging

Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself

More about Tocopherol

4-terpineol~0.1–0.35%

Formula

Irritation risk: Low

More about 4-terpineol

Ingredient list view

Betula platyphylla japonica juice, Butylene glycol, Glycerin, Dimethicone, Betaine, Cetearyl alcohol, 1,2-hexanediol, Cetearyl olivate, Sorbitan olivate, Ethylhexylglycerin, Hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer, Ethyl hexanediol, Xanthan gum, Allantoin, Panthenol, Water, Sodium hyaluronate, Sodium lactate, Sorbitan isostearate, Polysorbate 60, Tocopherol, 4-terpineol

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Amazon USPrice as of 10/23/2026 21:16 GMT

$17.50

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Yesstyle

$20.00

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Olive KOllection

$24.00

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Cosrx

$25.00

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Worth comparing, line by line.

Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.

Side-by-side comparison of this product against its closest alternatives
	COSRXOil-Free Ultra Moisturising Lotion with Birch SapYOUR PRODUCT	Dr.Reju-AllAdvanced PDRN Rejuvenating Cream Max	preangeVit B5 Emulsion	Cos De BAHAHyaluronic acid gel cream
Match	—	58%	57%	56%
Price	$13.31	$66.71+$53.40	$21.15+$7.84	$12.99
Shared key ingredients	—	5 of 7	4 of 7	6 of 7
Key difference	—	Niacinamide	Niacinamide	Niacinamide
Irritancy	Low	Low	Low	Low
Drying alcohol	—	—	—	—
	View product	Shop	Shop	Shop