The Vitamin C 23 Serum

The Vitamin C 23 Serum

3.5
34ingredients
SerumCOSRX

Full INCI list with a per-ingredient allergen & irritant analysis below.

Formula flagsfrom catalog claims
Reef-safeParaben-freeSulfate-freeFragrance-freeEU-allergen-freeVeganOil-freeAlcohol-freeCruelty-freeSilicone-freeFungal-acne-safe

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Allergen & irritant analysis

1 flagged

This serum from COSRX lists 34 ingredients. AllerNote's analysis flags 1 common irritant in the INCI list. No added fragrance, parabens, MI / MCI (isothiazolinones), formaldehyde-releasing preservatives, SLS / SLES sulfates were detected in the listed ingredients.

1 known irritant
  • Alcohol denat. · solventCan be drying and sensitizing, especially for sensitive skin, by stripping natural oils and disrupting the skin barrier.

Not detected: added fragrance, parabens, MI / MCI (isothiazolinones), formaldehyde-releasing preservatives, SLS / SLES sulfates.

Generated from this product's ingredient list and AllerNote's allergen database — educational, not medical advice or a substitute for patch testing.

Benefits

HydratingBarrier repairReduces irritationScar healingRedness reducingAnti-agingReduces large poresDark spotsBrighteningSkin textureAcne fightingGood for oily skin

Key Ingredients

  • 1
    Vitamin CBrightens, evens tone, and supports collagen.
  • 2
    Vitamin EProtects skin and soothes irritation.
  • 3
    AntioxidantsShields skin from free radical damage.
  • 4
    NiacinamideStrengthens, smooths, and brightens skin.
  • 5
    Hyaluronic AcidHydrates by attracting and holding water.

Full Ingredient List

34

INCI (full list, INCI order): water, ascorbic acid 23%, propanediol, dimethicone, tromethamine, panthenol, 3-o-ethyl ascorbic acid, squalane, caffeine, sodium chloride, sodium hyaluronate, sodium sulfite, disodium edta, glutathione, adenosine, acetyl glucosamine, gardenia florida fruit extract, allantoin, dextrin, tocotrienols, tocopherol, elaeis guineensis oil, butylene glycol, arginine, niacinamide, pentylene glycol, alcohol denat., helianthus annuus seed oil, glycyrrhiza glabra root extract, methyl trimethicone, carthamus tinctorius seed oil, camellia japonica seed oil, daucus carota sativa root extract, beta-carotene

Tap any ingredient to see details

27alcohol denat.

Potential Concerns

  • May Worsen DrynessCan strip moisture and worsen dryness.
  • May Worsen RosaceaCan trigger flare-ups in rosacea-prone skin.
  • May Trigger AcneCan clog pores or trigger breakouts.
  • May Worsen EczemaMay worsen itching or irritation for eczema.
  • May Worsen IrritationMay cause stinging, redness, or sensitivity.
  • May Worsen Oily SkinMay increase shine or excess oil.

Frequently asked questions

Is The Vitamin C 23 Serum fragrance-free?

No added fragrance or EU-labelled fragrance allergens were detected in The Vitamin C 23 Serum's listed ingredients. "Not detected" isn't an absolute guarantee, but it's a good sign for fragrance-sensitive skin — confirm against the current pack and your own triggers.

Is The Vitamin C 23 Serum paraben-free?

No parabens were detected in The Vitamin C 23 Serum's listed ingredients. Worth keeping in perspective: parabens are among the least common cosmetic allergens, so "paraben-free" matters far less for reactive skin than avoiding fragrance or the preservative MI/MCI.

Is The Vitamin C 23 Serum suitable for sensitive or allergy-prone skin?

It depends on your specific triggers. The Vitamin C 23 Serum contains 0 flagged allergens and 1 irritant (listed in the analysis above). If none are on your personal allergen list it may suit you, but patch test first — add your allergens to AllerNote to check The Vitamin C 23 Serum against your own profile.