ProtoClinical k-beauty COSRX The Vitamin C 23 Serum 20ml single centered serum bottle with a dark cap on a pale yellow and cream background
ProtoClinical k-beauty COSRX The Vitamin C 23 Serum 20ml single centered serum bottle on a white background with a dark cap and soft gray shadow
COSRX

COSRX The Vitamin C 23 Serum 20ml

$19.34
Airy Lash Feel
Fighting against Skin Aging!
For all skin types dealing with fine lines and wrinkles: COSRX's serum with Vitamin C works from within to deliver delivers concentrated actives deep into the skin, not just temporary comfort.
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Korean Beauty Formulation Suitable for Daily Use
pearl powder
COSRX The Vitamin C 23 Serum 20ml
COSRX The Vitamin C 23 Serum 20ml Default Title
$19.34
Clinically proven actives Dermatologist tested 100% authentic Korean Cruelty-free
What's inside ·

pearl powder, the repair molecule

Vitamin C (L-ascorbic acid) donates electrons to neutralize free radicals before they can damage collagen fibers and DNA. In this serum, Vitamin C targets fine lines and wrinkles, delivering delivers concentrated actives deep into the skin with consistent use.
Vitamin C
neutralizes free radicals and inhibits melanin production for brighter, more protected skin
The texture

Lightweight, absorbing serum

Fighting against Skin Aging!

All Skin Types dullness uneven tone loss of firmness dark spots
Hover the swatch — it ripples like water

How to use

Close the cap tightly after use.
Full transparency

Ingredients

Pearl powder in a cream shadow base that sets with a waterproof finish.

COSRX The Vitamin C 23 Serum 20ml is built around a high-strength vitamin C serum focused on radiance and visible age defense. Its ingredient story centers on 23% vitamin C and supportive antioxidant care. In cosmetic formulas, these materials are used because they can help brighten dull skin, improve the look of uneven tone, and defend against the daily oxidative stress that can make skin look older. That matters for this product format because a serum texture is effective because potent vitamin C is easiest to distribute evenly in a thin layer. Rather than promising instant transformation, the formula is designed to improve skin gradually through hydration support, barrier comfort, and steady visible refinement. With consistent use, that kind of approach can help skin look calmer, brighter, smoother, firmer, or more balanced depending on the product goal, while keeping the routine wearable. Texture also shapes performance: essences and serums layer easily, while creams create a more protective finish and targeted spot formulas stay focused where they are needed. In short, the science behind this product is ingredient synergy matched with a texture that helps those ingredients work in a practical daily routine.

The detail

Specs & details

FormatLightweight serum
SizeDefault Title
Skin typesAll Skin Types
Country of originSouth Korea
Pairs beautifully with

Complete the routine

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$19.34
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Questions & answers

After cleansing and toning, before moisturizer. Serums deliver actives most effectively on freshly prepped skin.
Yes. Apply from thinnest to thickest consistency and allow each layer to absorb before the next.
Most users notice initial improvement within 2 to 4 weeks. For full benefits like delivers concentrated actives deep into the skin, allow 6 to 8 weeks of consistent use.
Your skin begins adjusting. You may notice improved hydration and comfort before more visible changes like texture refinement become apparent.
Yes, this formula is developed to be compatible with all skin types dealing with fine lines and wrinkles. If you have very reactive skin, patch test on the inner arm before full application.
The formula is designed to be well-tolerated. For pregnancy-specific concerns, consult your healthcare provider. For sensitive skin, patch test before full application.
Vitamin C neutralizes free radicals and inhibits melanin production for brighter, more protected skin. Consistent daily use is key to seeing the full benefits.
Check the INCI list for the most accurate information on fragrance components. The formula is developed for minimal irritation potential.
Store in a cool, dry place away from direct sunlight. Use within 12 months of opening for optimal freshness and efficacy.
Serums have a higher concentration of targeted actives than essences and a lighter consistency than most ampoules. They deliver the most potent treatment in your routine.
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About the brand

OriginSeoul, KR
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