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COSRX The Vitamin C23 Serum 20ml

Name: COSRX The Vitamin C23 Serum 20ml
Brand: COSRX
Price: 25.2 CAD
Availability: OutOfStock

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COSRX

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from South Korea

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1–2 days
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Skin Types

Dull

Combination

Mature

Key Ingredients

Pure Vitamin C (Ascorbic acid)

Super vitamin E (Tocotrienol)

Hyaluronic Acid

Allantoin

Formula Highlights

Fragrance-free

Paraben-free

Sulfate-free

Benefits Brightens & evens skin tone • Helps fade dark spots • Boosts radiance • Antioxidant support • Hydrates

Product Description

Ingredients List

Details

How to Use

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

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

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.

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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