CosRx, Advanced The Vitamin C 23 Serum, 0.7 oz (20 g)

Label captured31 of 36 parsed

COSRX

CosRx, Advanced The Vitamin C 23 Serum, 0.7 oz (20 g)

Name: CosRx, Advanced The Vitamin C 23 Serum, 0.7 oz (20 g)
Brand: COSRX
Price: 20.00 USD
Availability: InStock

Skin · Serum

Highlights

Evidence-backed actives: panthenol, squalane, caffeine, sodium hyaluronate, allantoin

Fragrance-free

Sulfate-free

Paraben-free

Item details

Super Vitamin E + Hyaluronic AcidImprove Skin ConditionEven Skin ToneClinically ProvenHighly concentrated 23% pure vitamin C serum that visibly improves the appearance of uneven dull skin complexions and signs of aging.

Full specifications

GTIN 8800311121256

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Check against a routine →

Ingredients, in plain words

In label order. English and Korean names resolve to the same record.

Label captured · 31 of 36 parsed · 31 of 31 explained

✓ Fragrance-free✓ Sulfate-free✓ Paraben-free✓ Vegan (by ingredients)✓ Fungal-acne friendly*Contains ingredients flagged for babies†

Checks cite their rules — not medical advice. See how we flag ingredients →

*Community guideline based on the ingredient label — not medical advice.

†Screened against sourced pediatric and dermatology guidance for infant and child topical use. Absence of a flagged ingredient is not proof of safety, and this is not medical advice — see the graded breakdown and sources.

A silicone

Dimethicone · 다이메티콘

Makes skin and hair feel instantly silky and smooth and improves spreadability

softens and smooths the skin; leaves skin feeling smoother or better cared for

1 source

Pro-vitamin B5

Panthenol · 판테놀

Moisturizes and improves hydration by drawing and holding water in the skin

leaves skin feeling smoother or better cared for; leaves hair feeling smoother and easier to manage

2 sources

3-O-Ethyl Ascorbic Acid

3-o-에틸아스코빅애씨드

Provides antioxidant activity in laboratory testing

leaves skin feeling smoother or better cared for

3 sources

Squalane

스쿠알란

Softens and smooths skin

softens and smooths the skin; leaves skin feeling smoother or better cared for

1 source

Caffeine

카페인

Some small studies report temporary improvement in under-eye appearance from caffeine-containing formulas

leaves skin feeling smoother or better cared for; adds scent

2 sources

Hyaluronic Acid (salt form)

Sodium Hyaluronate · 소듐하이알루로네이트

Pulls water into the skin for immediate hydration and a plumper look

draws moisture into the skin; leaves skin feeling smoother or better cared for

2 sources

Show all 31 ingredients

Glutathione

글루타치온

Can act as an antioxidant in a cosmetic formula and potentially at the skin surface

a chemical step used in some hair-straightening or perming treatments

2 sources

Adenosine

아데노신

May modestly improve the appearance of crow's-feet and glabellar wrinkles with consistent topical use

leaves skin feeling smoother or better cared for

3 sources

Gardenia Florida Fruit Extract

치자추출물

Can contribute botanical conditioning and color to a finished formula

leaves skin feeling smoother or better cared for

2 sources

Dextrin

덱스트린

Helps bind powder ingredients and improve product cohesion

holds a product's ingredients together; adds volume or body to a formula

3 sources

Acetyl Glucosamine

아세틸글루코사민

Helps maintain skin in good condition

leaves skin feeling smoother or better cared for

3 sources

Allantoin

알란토인

Helps condition and soften the skin surface

leaves skin feeling smoother or better cared for; helps calm skin discomfort or irritation

3 sources

Tocotrienols

토코트라이엔올

Formula role: is used in products made for the mouth or teeth.

absorbs UV light to help protect the formula or skin; leaves skin feeling smoother or better cared for

2 sources

Vitamin E

Tocopherol · 토코페롤

Helps slow oxidative deterioration of oils in a cosmetic formula

leaves skin feeling smoother or better cared for; slows oxidation that can degrade a formula

2 sources

Vitamin B3

Niacinamide · 나이아신아마이드

Can improve the appearance of redness and uneven tone in some formulas

helps skin or hair feel smoother

2 sources

Butylene Glycol

부틸렌글라이콜

Helps dissolve and distribute water-soluble or fragrance ingredients within a formula

draws moisture into the skin; leaves skin feeling smoother or better cared for

3 sources

Arginine

아르지닌

Contributes to the conditioned feel of skin and hair in cosmetic formulations

leaves skin feeling smoother or better cared for; leaves hair feeling smoother and easier to manage

3 sources

Camellia Japonica Seed Oil

동백나무씨오일

Adds emollience and helps reduce a rough, dry feel

softens and smooths the skin; leaves skin feeling smoother or better cared for

4 sources

Methyl Trimethicone

메칠트리메치콘

Improves quick, even spreading

leaves skin feeling smoother or better cared for; leaves hair feeling smoother and easier to manage

2 sources

Beta-Carotene

베타-카로틴

Adds yellow-to-orange color to a cosmetic formula

leaves skin feeling smoother or better cared for

3 sources

Water

물

Dissolves and evenly distributes many water-soluble ingredients

leaves skin feeling smoother or better cared for; dissolves other ingredients so they blend into the formula

3 sources

Drying alcohol

Alcohol Denat

Excellent solvent for components that won't dissolve in water or oil

3 sources

Pentylene Glycol

펜틸렌글라이콜

Helps condition skin and supports short-term humectancy

leaves skin feeling smoother or better cared for; dissolves other ingredients so they blend into the formula

3 sources

Vitamin C

Ascorbic Acid · 아스코빅애씨드

Provides antioxidant activity in a stable topical formula

leaves skin feeling smoother or better cared for; slows oxidation that can degrade a formula

2 sources

Propanediol

프로판다이올

Dissolves and carries other ingredients in water-based formulations

dissolves other ingredients so they blend into the formula; adjusts how thick or thin the product feels

2 sources

Sodium Chloride

소듐클로라이드

Adjusts thickness and flow in compatible water-based cleanser and shampoo systems

adds volume or body to a formula; adds scent

3 sources

Sodium Sulfite

소듐설파이트

Formula role: helps slow oxidation that can damage the formula.

stops microbes from growing so the product stays safe to use; slows oxidation that can degrade a formula

2 sources

Sodium Metaphosphate

소듐메타포스페이트

Helps maintain the intended formula pH

keeps a formula's pH steady; binds trace metals that could destabilize a formula

1 source

Disodium EDTA

다이소듐이디티에이

Improves formula stability by binding troublesome trace metals

binds trace metals that could destabilize a formula; adjusts how thick or thin the product feels

2 sources

Sodium Hydroxide

소듐하이드록사이드

Adjusts and stabilises product pH so the complete formula can perform as intended

keeps a formula's pH steady; makes alcohol undrinkable without changing its cosmetic use

3 sources

Tromethamine

트로메타민

Adjusts and buffers formula pH so other ingredients and the finished product can perform consistently

keeps a formula's pH steady; adds scent

2 sources

Ingredient safety notes

Ingredient lists can vary by batch — always check your packaging.

This is not medical advice. Statements here have not been evaluated by the FDA.

Patch-test new products on a small area first.

See the full INCI label →

Close on formula

All serums & essences →

COSRX

Advanced The Vitamin C 23 Serum

Cheaper · same panthenol

COSRX

The Vitamin C 13 Serum

Cheaper · same ascorbic acid

→Browse all serums & essencesCompared by formula, not hype

Ingredients, in plain words

In label order. English and Korean names resolve to the same record.

Label captured · 31 of 36 parsed · 31 of 31 explained

✓ Fragrance-free✓ Sulfate-free✓ Paraben-free✓ Vegan (by ingredients)✓ Fungal-acne friendly*Contains ingredients flagged for babies†

Checks cite their rules — not medical advice. See how we flag ingredients →

*Community guideline based on the ingredient label — not medical advice.

A silicone

Dimethicone · 다이메티콘

Makes skin and hair feel instantly silky and smooth and improves spreadability

softens and smooths the skin; leaves skin feeling smoother or better cared for

1 source

Pro-vitamin B5

Panthenol · 판테놀

Moisturizes and improves hydration by drawing and holding water in the skin

leaves skin feeling smoother or better cared for; leaves hair feeling smoother and easier to manage

2 sources

3-O-Ethyl Ascorbic Acid

3-o-에틸아스코빅애씨드

Provides antioxidant activity in laboratory testing

leaves skin feeling smoother or better cared for

3 sources

Squalane

스쿠알란

Softens and smooths skin

softens and smooths the skin; leaves skin feeling smoother or better cared for

1 source

Caffeine

카페인

Some small studies report temporary improvement in under-eye appearance from caffeine-containing formulas

leaves skin feeling smoother or better cared for; adds scent

2 sources

Hyaluronic Acid (salt form)

Sodium Hyaluronate · 소듐하이알루로네이트

Pulls water into the skin for immediate hydration and a plumper look

draws moisture into the skin; leaves skin feeling smoother or better cared for

2 sources

Show all 31 ingredients

Glutathione

글루타치온

Can act as an antioxidant in a cosmetic formula and potentially at the skin surface

a chemical step used in some hair-straightening or perming treatments

2 sources

Adenosine

아데노신

May modestly improve the appearance of crow's-feet and glabellar wrinkles with consistent topical use

leaves skin feeling smoother or better cared for

3 sources

Gardenia Florida Fruit Extract

치자추출물

Can contribute botanical conditioning and color to a finished formula

leaves skin feeling smoother or better cared for

2 sources

Dextrin

덱스트린

Helps bind powder ingredients and improve product cohesion

holds a product's ingredients together; adds volume or body to a formula

3 sources

Acetyl Glucosamine

아세틸글루코사민

Helps maintain skin in good condition

leaves skin feeling smoother or better cared for

3 sources

Allantoin

알란토인

Helps condition and soften the skin surface

leaves skin feeling smoother or better cared for; helps calm skin discomfort or irritation

3 sources

Tocotrienols

토코트라이엔올

Formula role: is used in products made for the mouth or teeth.

absorbs UV light to help protect the formula or skin; leaves skin feeling smoother or better cared for

2 sources

Vitamin E

Tocopherol · 토코페롤

Helps slow oxidative deterioration of oils in a cosmetic formula

leaves skin feeling smoother or better cared for; slows oxidation that can degrade a formula

2 sources

Vitamin B3

Niacinamide · 나이아신아마이드

Can improve the appearance of redness and uneven tone in some formulas

helps skin or hair feel smoother

2 sources

Butylene Glycol

부틸렌글라이콜

Helps dissolve and distribute water-soluble or fragrance ingredients within a formula

draws moisture into the skin; leaves skin feeling smoother or better cared for

3 sources

Arginine

아르지닌

Contributes to the conditioned feel of skin and hair in cosmetic formulations

leaves skin feeling smoother or better cared for; leaves hair feeling smoother and easier to manage

3 sources

Camellia Japonica Seed Oil

동백나무씨오일

Adds emollience and helps reduce a rough, dry feel

softens and smooths the skin; leaves skin feeling smoother or better cared for

4 sources

Methyl Trimethicone

메칠트리메치콘

Improves quick, even spreading

leaves skin feeling smoother or better cared for; leaves hair feeling smoother and easier to manage

2 sources

Beta-Carotene

베타-카로틴

Adds yellow-to-orange color to a cosmetic formula

leaves skin feeling smoother or better cared for

3 sources

Water

물

Dissolves and evenly distributes many water-soluble ingredients

leaves skin feeling smoother or better cared for; dissolves other ingredients so they blend into the formula

3 sources

Drying alcohol

Alcohol Denat

Excellent solvent for components that won't dissolve in water or oil

3 sources

Pentylene Glycol

펜틸렌글라이콜

Helps condition skin and supports short-term humectancy

leaves skin feeling smoother or better cared for; dissolves other ingredients so they blend into the formula

3 sources

Vitamin C

Ascorbic Acid · 아스코빅애씨드

Provides antioxidant activity in a stable topical formula

leaves skin feeling smoother or better cared for; slows oxidation that can degrade a formula

2 sources

Propanediol

프로판다이올

Dissolves and carries other ingredients in water-based formulations

dissolves other ingredients so they blend into the formula; adjusts how thick or thin the product feels

2 sources

Sodium Chloride

소듐클로라이드

Adjusts thickness and flow in compatible water-based cleanser and shampoo systems

adds volume or body to a formula; adds scent

3 sources

Sodium Sulfite

소듐설파이트

Formula role: helps slow oxidation that can damage the formula.

stops microbes from growing so the product stays safe to use; slows oxidation that can degrade a formula

2 sources

Sodium Metaphosphate

소듐메타포스페이트

Helps maintain the intended formula pH

keeps a formula's pH steady; binds trace metals that could destabilize a formula

1 source

Disodium EDTA

다이소듐이디티에이

Improves formula stability by binding troublesome trace metals

binds trace metals that could destabilize a formula; adjusts how thick or thin the product feels

2 sources

Sodium Hydroxide

소듐하이드록사이드

Adjusts and stabilises product pH so the complete formula can perform as intended

keeps a formula's pH steady; makes alcohol undrinkable without changing its cosmetic use

3 sources

Tromethamine

트로메타민

Adjusts and buffers formula pH so other ingredients and the finished product can perform consistently

keeps a formula's pH steady; adds scent

2 sources

Ingredient safety notes

Ingredient lists can vary by batch — always check your packaging.

This is not medical advice. Statements here have not been evaluated by the FDA.

Patch-test new products on a small area first.

CosRx, Advanced The Vitamin C 23 Serum, 0.7 oz (20 g)

Ingredients, in plain words

Ingredient safety notes

Close on formula

Command palette

Ingredients, in plain words

Ingredient safety notes

Close on formula