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The Vitamin C 23 Serum
Serum · 20 ml · $0.84/ml
Best price right now
$16.80
$0.84 per ml
Checked today
at Stylevana
Save $8.20 vs. the priciest authentic seller.
Also available at
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Prices last checked today · across 7 retailers
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Price history
What this serum has actually cost
We check every authenticated seller daily; each point is the lowest landed price we found that day.
The current lowest authorized landed price for COSRX The Vitamin C 23 Serum is $16.80 at Stylevana — checked Aug 19, 2026. We rank by real landed cost across authenticity-checked sellers, never pay-to-rank.
Skin compatibility
Will this suit your skin?
We run the ingredient list we hold against three curated reference lists. Skin is personal — these are notes to help you decide, not rules. Pregnancy questions belong with your doctor, and if we don't have a full ingredient list we say so instead of guessing.
Transparency
What's actually in it
Key active
Ascorbic Acid (Vitamin C)
23%
brightening, antioxidant
Key active
3-O-Ethyl Ascorbic Acid
listed
stable vitamin C
Key active
Glutathione
listed
antioxidant, brightening
Concentrations as stated by the brand — we never estimate them from the INCI order.
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Answers