COSRX The Vitamin C 23 Serum
The COSRX The Vitamin C 23 Serum is a clinical-strength powerhouse from the brand COSRX, designed for those seeking the most dramatic results against pigmentation and aging. This high-concentration serum contains a remarkable 23% of Pure Vitamin C (L-Ascorbic Acid), the highest effective percentage used in daily skincare. This pure form of Vitamin C is intensely powerful at aggressively fading stubborn dark spots, post-acne marks (PIH/PIE), and sun damage. It also supercharges collagen production to visibly reduce the depth of fine lines and wrinkles. The biphasic formula is stabilized with Super Vitamin E and hydrating Hyaluronic Acid, ensuring maximum efficacy while delivering deep moisture.
Sleame / Pre-sale Questions
Need Help? Contact Us via WhatsApp
- Estimated Delivery : Up to 4 business days
- Free Shipping & Returns : On all orders over $200
COSRX The Vitamin C 23 Serum — High Concentration for Ultimate Correction
The COSRX The Vitamin C 23 Serum is engineered to provide transformative results, particularly for skin that has built up tolerance to lower concentrations of L-Ascorbic Acid and needs maximum corrective power. The brand COSRX delivers on its promise of high-concentration, targeted treatments.6
This maximum-strength serum provides superior results through focused action:
Maximum Potency (23% L-Ascorbic Acid): This is one of the highest possible concentrations of the most bioavailable form of Vitamin C.7 The 23% level provides intensive inhibition of melanin production, making it highly effective at rapidly diminishing the appearance of long-standing or deep-set hyperpigmentation, including stubborn dark spots and severe sun damage.
Reinforced with Super Vitamin E: The formula features Super Vitamin E, which works synergistically with L-Ascorbic Acid.8 Vitamin E not only stabilizes the volatile Vitamin C, helping it last longer, but also provides 400 times the antioxidant power of regular Vitamin E. This combination creates a defense shield against free radical damage, pollution, and oxidation.
Oil-Water Bi-Phase Stability: To protect the potent ingredients, the serum is formulated with an oil-water barrier that must be shaken before use. This bi-phase nature helps reduce oxidation and delivers a nourishing dose of Hyaluronic Acid and other moisturizing components, which prevents the dryness or irritation often associated with high-strength acids.
Anti-Aging and Firming Power: Beyond brightening, the serum dramatically boosts collagen synthesis, targeting deeper concerns like loss of firmness, elasticity, and the development of deeper wrinkles, restoring a youthful bounce and smoothness to the skin.9
Due to its high concentration, the COSRX The Vitamin C 23 Serum is ideal for experienced Vitamin C users seeking ultimate anti-aging and brightening correction.10
Key Benefits
Max Strength Fading: 23% pure Ascorbic Acid aggressively tackles the most stubborn dark spots and pigmentation.
Ultimate Antioxidant: Combination of 23% Vitamin C and Super Vitamin E provides maximum protection against free radical damage.
Intensive Anti-Aging: Significant collagen boosting for reducing wrinkles, fine lines, and improving skin elasticity.11
Deep Hydration: Contains Hyaluronic Acid to plump the skin and counteract potential dryness from the high acid content.12
Biphasic Stability: Oil-water layer system protects the purity and extends the product’s effective lifespan.
Product Brand: COSRX
How to Use
Shake: Before every use, gently shake the bottle 3-5 times to fully mix the oil and water layers.
Prep: Use in the evening after cleansing and toning.
Application: Dispense 2-3 drops onto clean fingertips. Gently massage or press the serum onto the face, specifically targeting pigmented areas, avoiding the eye and lip areas.
Routine: Follow immediately with a hydrating, soothing moisturizer.
Frequency: Start by using 2-3 times per week and slowly increase frequency as skin tolerates. Do not use on the same night as high-concentration Retinoids or strong exfoliants.
Storage: MUST be stored in a refrigerator to maximize the longevity and prevent the oxidation of the 23% pure Vitamin C.
Product Details
Product Brand: COSRX
Skincare Type: High-Concentration Face Serum / Antioxidant Treatment
Skin Concern: Stubborn Dark Spots, Severe Hyperpigmentation, Deep Wrinkles, Loss of Firmness, Dullness
Key Ingredients: 23% Ascorbic Acid (Pure Vitamin C), Tocotrienol (Super Vitamin E), Hyaluronic Acid, Allantoin13
Volume: 20ml
Suggested Attributes
Product Type: Serum
Key Feature: Vitamin C 23%, High Concentration, Dark Spot Fade, Anti-Aging, Antioxidant, Firming, Max Strength14
Skin Concern: Stubborn Dark Spots, Wrinkles, Hyperpigmentation, Loss of Firmness
Target Ingredient: Ascorbic Acid, Vitamin E, Hyaluronic Acid15
Product Brand: COSRX








Reviews
There are no reviews yet.