Cosrx Advanced The Vitamin C 23 Serum 20 g

COSRX Advanced The Vitamin C 23 Serum 20g | High-Potency 23% Pure Vitamin C & Super Vitamin E Antioxidant Brightening & Firming Glass Skin Serum | 100% Original Made in Korea

Product Overview & Benefits

Managing dark spots, post-acne blemishes, and sallow dullness under a humid tropical climate like Bangladesh requires high-potency antioxidant care. UV radiation and environmental pollution trigger free-radical damage and accelerate melanin production, leading to uneven pigmentation and loss of skin elasticity. COSRX Advanced The Vitamin C 23 Serum addresses these core concerns by delivering a stable, maximum-strength formula that brightens the complexion while strengthening the skin matrix.

What sets this serum apart is its High-Potency Brightening & Antioxidant Core:

1. 23% Pure Vitamin C (Ascorbic Acid): A gold-standard antioxidant that fades hyperpigmentation, stimulates collagen production, and restores skin radiance.
2. Super Vitamin E (Tocotrienol): Offers up to 50 times greater antioxidant efficacy than standard Vitamin E, working synergistically with Vitamin C to neutralize environmental damage.
3. Glutathione & Niacinamide: Inhibits dark spot formation, clears sallow undertones, and improves overall tone uniformity.

Supported by Sodium Hyaluronate, Squalane, Panthenol (Vitamin B5), and Allantoin, the bi-phase formula buffers the skin against potential active dryness. It hydrates deep tissue layers, calms redness, and smooths surface micro-textures. Hypoallergenic and non-comedogenic, this serum delivers noticeable clarity and a healthy glass-skin glow.

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Skin Type Suitability

• Hyperpigmented & Blemish-Prone Skin: Fades post-acne marks, sun spots, and uneven patches.
• Dull & Fatigued Complexions: Restores translucent clarity and natural radiance to tired skin.
• Aging & Fine Line-Prone Profiles: Promotes collagen synthesis to improve elasticity and firmness.
• Normal, Combination & Dry Skin: Delivers oil-water hydration to refine rough texture without clogging pores.

Who Is This Product For

• Ideal for experienced Vitamin C users seeking a high-strength 23% formula to rapidly lighten dark spots and hyperpigmentation.
• Perfect for individuals dealing with sallow skin, photo-aging, or uneven tone.
• Highly recommended for those looking for a fast-absorbing antioxidant serum that pairs well under daily sunscreen.
• Excellent for anyone wanting an authentic, laboratory-tested Korean active serum to maintain a bright glass-skin baseline.

Who Should Avoid This Product

• Avoid using this serum if you have an allergy to Ascorbic Acid or specific components listed in the ingredients.
• First-time Vitamin C users or those with hyper-reactive, compromised barriers should execute a 24-hour patch test first.
• Do not apply directly across open bleeding wounds, weeping eczema flares, or unhealed lesions.

What Skin Concerns Does It Help Address

• Stubborn Dark Spots & Hyperpigmentation: Inhibits excess melanin to fade sun spots and acne marks.
• Sallow Dullness & Loss of Radiance: Re-energizes tired skin for a clear, uniform tone.
• Fine Lines & Loss of Elasticity: Stimulates collagen synthesis to firm up skin structure.
• Rough Skin Micro-Texture: Smooths out flaky patches and refines pore boundaries.
• Environmental Free-Radical Damage: Protects cells against oxidative stress caused by UV rays and pollution.

Expected Skincare Results Timeline

• Immediate (First Application): Skin feels hydrated, smooth, and nourished. A slight, temporary warming or tingling sensation may occur as the active Vitamin C absorbs.
• Within 14 Days: Surface micro-roughness feels refined, skin brightness improves, and midday dullness decreases.
• After 4 Weeks: Dark spots and post-breakout marks look noticeably lighter, skin elasticity is enhanced, and the face maintains a firmer glass-skin glow.

Note: Results are not guaranteed and may vary depending on skin type, barrier condition, environmental factors, and consistency of use.

How To Use

Using your high-potency Vitamin C serum correctly ensures maximum active potency and skin comfort.

Step-by-Step Application

1. Shake the bottle gently 1–2 times before use to blend the bi-phase oil and water layers.
2. Cleanse your face thoroughly and apply a light hydrating toner.
3. Dispense 2 to 3 drops of serum onto clean fingertips or directly onto cheeks.
4. Smooth evenly across the face and neck, avoiding the immediate eye area.
5. Gently pat until absorbed, then follow with moisturizer and broad-spectrum sunscreen during the day.

Daily Skincare Pro-Tip & Cautions

• Storage Requirement: High-concentration Ascorbic Acid is sensitive to heat and light. Store the bottle in the refrigerator after opening to maintain freshness and prevent oxidation.
• Routine Incompatibilities: Avoid using in the same routine alongside Retinol, AHA/BHA exfoliants, or Copper Peptides to prevent skin irritation or active degradation. Use Vitamin C in the morning and other strong actives at night.

Ingredient Breakdown

• Pure Vitamin C (Ascorbic Acid 23%): High-potency active that brightens tone, reduces melanin production, and boosts collagen synthesis.
• Tocotrienols & Tocopherol (Super Vitamin E): Powerful antioxidant derivatives that neutralize free radicals and amplify Vitamin C stability.
• Glutathione & Niacinamide: Synergy blend that targets hyperpigmentation, smooths texture, and improves tone clarity.
• Sodium Hyaluronate & Squalane: Skin-identical humectants and emollients that lock in moisture and protect the lipid barrier.
• Panthenol (Vitamin B5) & Allantoin: Soothing agents that calm surface heat, reduce irritation, and support recovery.
• Adenosine: An anti-aging active that helps smooth fine lines and improves skin elasticity.

About COSRX

COSRX is an internationally acclaimed South Korean skincare brand celebrated globally for creating simple, highly effective, and science-backed solutions for sensitive and troubled skin. Derived from "Cosmetics + RX (Prescription)," COSRX utilizes minimal, high-purity active ingredients to target specific skin concerns, making it a trusted benchmark name across K-Beauty worldwide.

• Country of Origin: South Korea

Authenticity & Quality Assurance

When purchasing imported Korean skincare and active treatments, verifying absolute product authenticity is essential to protect your skin barrier and ensure reliable results.

We source our products from trusted and reliable sources to ensure authenticity, quality, and customer confidence.

At thealoy.com, every item in our selection undergoes strict quality checks through a secure supply chain to guarantee its true origin. Whether you are searching for an authentic skincare shop in Bangladesh, purchasing original skincare products online Bangladesh, or looking for dermatologist recommended skincare BD options, thealoy.com delivers an elite, fully certified shopping experience.

Frequently Asked Questions

Is a 23% Vitamin C concentration suitable for everyday use? Yes, but experienced users can use it daily, while beginners should start by applying it 2–3 times a week to build tolerance before moving to daily morning use.

Why does this serum need to be stored in the refrigerator? 23% Pure Ascorbic Acid is sensitive to air, heat, and light. Refrigerating the bottle slows down oxidation, keeping the serum fresh and potent throughout its use period.

Can I wear this serum during the day under sunscreen? Yes, highly recommended. Vitamin C works synergistically with broad-spectrum SPF to enhance protection against UV-induced free radical damage.

Does this product have a specific scent or color? Due to the 23% pure Ascorbic Acid content, the serum has a natural pale-yellow tint and a distinct, characteristic raw Vitamin C scent without added artificial fragrances.

Where can I buy the original 20g COSRX Advanced The Vitamin C 23 Serum in Bangladesh? You can purchase the 100% genuine COSRX Advanced The Vitamin C 23 Serum 20g directly from our verified storefront at thealoy.com, featuring secure protective packaging and reliable nationwide delivery.

Safety Information

For external cosmetic use only. Avoid direct contact with internal eye sockets or lips; if accidental contact occurs, rinse immediately with clean, cool water. Always apply sunscreen during daytime use. Discontinue use if abnormal irritation, excessive burning, or red localized allergic rashes develop, and consult a dermatologist. Store in the refrigerator away from direct sunlight and heat. Keep out of reach of children.