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COSRX The Vitamin C23 Serum 20ml

COSRX

~~$36.00~~ $25.20 Save 30%

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from Korea

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1–2 days
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over $59.99
From Canada

Skin Types — Dull, Normal/Combination, Mature

Key Ingredients — Pure Vitamin C (Ascorbic acid), Super vitamin E (Tocotrienol), Hyaluronic Acid, Allantoin

Benefits — Brightens & evens skin tone, Fades dark spots, Boosts radiance, Provides antioxidant support, Adds hydration & glow

Formula Highlights — Fragrance-free, Parabens-free, Sulfates-free

Product Description

Ingredients List

Details

How to Use

Tags: 30%off, Ampoules, Brightening, Cosrx, Dehydration, Dryness, Dullness, Essences & serums, Fine lines, Hyaluronic acid, K-beauty, Pores, Vitamin c, Wrinkles

Where This Fits In Your Routine

Use products in the right order for best results

STEP 7: SUN CARE

Protects skin from UV damage, dark spots, and premature aging.
The most important step for maintaining results long-term.

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STEP 1: CLEANSING

Removes oil, sunscreen, makeup & daily buildup.
Clean skin helps the rest of your routine absorb better.

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EXTRA STEP: EXFOLIATE

Removes dead skin cells to improve texture and help products absorb better.
Use only a few times per week. (1-3X WEEKLY)

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STEP 2: TONING

Rehydrates skin after cleansing and balances moisture levels.
Preps your skin so serums can work more effectively.

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STEP 3: SERUMS

Concentrated treatments that target specific concerns.
Great for acne, dark spots, dullness, fine lines & barrier repair.

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STEP 4: EYE CARE

Designed for the delicate under-eye area.
Helps with dryness, puffiness, dark circles & fine lines.

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STEP 5: MOISTURIZERS

Locks in hydration and strengthens your skin barrier.
Keeps skin soft, bouncy, and protected throughout the day or night.

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STEP 6: MASKS

An extra treatment step used a few times a week.
Boosts glow, clams irritation, or deeply hydrates tried skin.

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FREQUENTLY ASKED QUESTIONS

How often can I use this highly concentrated vitamin C serum?

Daily use is possible—but if you experience irritation, reduce frequency to every other day or every third day. Patch testing is strongly advised before full-face use.

What should you avoid mixing with this serum?

Avoid concurrent use of AHA/BHA exfoliants, benzoyl peroxide, and other strong actives during the same session to prevent overexfoliation or inactivation of L-ascorbic acid. It layers well with hydrating products like ceramides, hyaluronic acid, niacinamide, snail essence, or centella products.

How should you store and use the COSRX Vitamin C 23 Serum?

Store refrigerated (3–10 °C) in a cool, dark place. The serum comes in two layers—shake before use to blend oil and vitamin C. Use within 2 months of opening to avoid oxidation. Apply a few drops to clean skin, followed by moisturizer and SPF 30+ during the day.

Fade Dark Spots & Boost Glow

Targets pigmentation, firms skin and restores youthful radiance

Key Ingredients

• 23% Pure Vitamin C (Ascorbic acid)
Improves blemishes and brighten skin, reduce wrinkles and enhance elasticity

• Super vitamin E (Tocotrienol)
50X higher antioxidant activities than tocopherol, stimulate collagen production

• Hyaluronic Acid
Strong moisture retention to maintain hydration

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COSRX The Vitamin C23 Serum 20ml

COSRX The Vitamin C23 Serum 20ml

Product Description

Ingredients List

Details

How to Use

Where This Fits In Your Routine

FREQUENTLY ASKED QUESTIONS

Complete Your Routine

Fade Dark Spots & Boost Glow

Key Ingredients

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