COSRX The Vitamin C 13 Serum 20ml

25 ingredients decoded 6 similar formulasNo reviews yet

Serums & essences

Recorded ingredients include Ascorbic Acid, Panthenol and Caffeine. View details

Size

Not listed · confirm the exact variant with the retailer

Where to buy

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Formula highlights

6 key ingredients · Vitamin C, Pro-vitamin B5, Caffeine, Hyaluronic Acid (salt form), Allantoin, Squalane
Label limits · The source for this ingredient list is unconfirmed as a complete label. Free-of and vegan status are not established.

Product highlights

Product typeSerum
Key ingredients listedVitamin C · Pro-vitamin B5 · Caffeine · Hyaluronic Acid (salt form)
Brand originSouth Korea

Check the packaging for current ingredients, directions and warnings.

Specifications

Brand: COSRX
Product type: Serum
Net content: Not provided
Brand origin: South Korea SourceWhere the brand originates; manufacturing location may differ.
Manufacturing country: Not verifiedCheck the country of manufacture on your product’s packaging.

Ingredient research by concern

See ingredients

Studies of listed ingredients, not tests of this product. Results depend on concentration, formulation and use.

Dark spots & uneven tone

Niacinamide

Helps improve the look of dark spots.

A formulation with 5% niacinamide improved the appearance of dark spots in a controlled twelve-week study of fifty white women with photoaged skin, using it twice daily.

One population and formulation; this does not establish results at an unknown concentration or in this product.

Evidence & sources

Evidence: limited · Split-face controlled trial; abstract checked. Authors affiliated with Procter & Gamble; funding details unconfirmed.

Bissett et al. (2005): niacinamide facial study

Ingredient research; not regulatory approval · Cosmetic copy approved 2026-10-16 · No named expert review

Fine lines & wrinkles

Adenosine

Helps smooth the look of fine lines around the eyes.

Adenosine-containing cream and dissolving film improved measured eye-area skin smoothness in a controlled eight-week study of women aged 45–65.

Concentration is not specified in the abstract. Findings concern the tested formulations and do not establish this product’s results.

Evidence & sources

Evidence: limited · One randomized placebo-controlled human study; abstract checked. Author affiliated with L’Oréal; funding details unconfirmed.

Abella (2006): adenosine-containing formulations

Ingredient research; not regulatory approval · Cosmetic copy approved 2026-10-16 · No named expert review

Niacinamide

Helps soften the appearance of fine lines and wrinkles.

A formulation with 5% niacinamide improved the appearance of fine lines and wrinkles in a controlled twelve-week study of fifty white women with photoaged skin, using it twice daily.

One population and formulation; this does not establish results at an unknown concentration or in this product.

Evidence & sources

Evidence: limited · Split-face controlled trial; abstract checked. Authors affiliated with Procter & Gamble; funding details unconfirmed.

Bissett et al. (2005): niacinamide facial study

Ingredient research; not regulatory approval · Cosmetic copy approved 2026-10-16 · No named expert review

Formula at a glance

Full ingredient list, 25 →

CosIng counts, not concentrations or product results. Groups may overlap. Scent-related functions do not confirm added perfume. UV functions do not establish sunscreen protection or SPF.

Softening19 of 25
Scent-related8 of 25
Texture & base8 of 25
Preservation3 of 25
Hydration2 of 25
UV functions1 of 25

Key ingredientsVitamin CPro-vitamin B5CaffeineHyaluronic Acid (salt form)AllantoinSqualane

Details

Ingredient list (25)

1Water · 물Skin conditioning
2Vitamin C · Ascorbic Acid · 아스코빅애씨드Skin conditioning
3Butylene Glycol · 부틸렌글라이콜Humectant
4Dipropylene Glycol · 다이프로필렌글라이콜Baby use — cautionFragrance
5Tromethamine · 트로메타민Buffering
63-O-Ethyl Ascorbic Acid · 3-o-에틸아스코빅애씨드Skin conditioning
7Pro-vitamin B5 · Panthenol · 판테놀Skin conditioning
8Acetyl Glucosamine · 아세틸글루코사민Skin conditioning
9Caffeine · 카페인Skin conditioning
10Hyaluronic Acid (salt form) · Sodium Hyaluronate · 소듐하이알루로네이트Humectant
11Sodium Sulfite · 소듐설파이트Preservative
12Disodium EDTA · 다이소듐이디티에이Chelating
13Glutathione · 글루타치온Reducing
14Adenosine · 아데노신Skin conditioning
15Gardenia Florida Fruit Extract · 치자추출물Skin conditioning
16Allantoin · 알란토인Skin conditioning
17Dextrin · 덱스트린Absorbent
18Squalane · 스쿠알란Emollient
19Tocotrienols · 토코트라이엔올UV absorber
20Vitamin E · Tocopherol · 토코페롤Skin conditioning
21Elaeis Guineensis Oil · 기름야자오일Emollient
22Arginine · 아르지닌Skin conditioning
23Vitamin B3 · Niacinamide · 나이아신아마이드Smoothing
24Pentylene Glycol · 펜틸렌글라이콜Skin conditioning
25Glycyrrhiza Glabra Root Extract · 감초추출물Emollient

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Safety & cautions

Concentration and exposure have not been verified for this product. Ingredient order does not establish a percentage.

Breastfeeding assessment

Breastfeeding has not been assessed separately in this database. Pregnancy results do not answer that question.

No pregnancy or fragrance-allergen caution matched in this panel. Other contexts, including fungal acne and baby use, are shown on individual ingredient rows. An absent flag is not a safety clearance.

Formula record

Label: CapturedVersion name unconfirmed.
Offer market: Not confirmedBased on markets in the current offer feed

Ingredient source · unconfirmed

Label: Captured
Parsed: 25 of 25 listed
Explained: 25 of 25 in plain words

No matching label source recorded. Check your package before relying on an ingredient being absent.

Ingredient list →

What stands out

The decision brief. Formula analysis cannot predict texture, finish, or individual reactions.

Key ingredientsVitamin C, Pro-vitamin B5, Caffeine, Hyaluronic Acid (salt form), Allantoin, Squalane. Each links to its ingredient reference.Vitamin CPro-vitamin B5CaffeineHyaluronic Acid (salt form)AllantoinSqualane
25 of 25 ingredients linkedEvery label line is matched to a reference record. The source for this ingredient list is unconfirmed as a complete label. Free-of and vegan status are not established.