COSRX The Vitamin C 13 Serum (20 ml)

COSRX The Vitamin C 13 Serum (20 ml)

Product Overview

COSRX The Vitamin C 13 Serum is a highly effective, brightening booster serum designed to revive dull, fatigued skin and combat the early signs of aging. Formulated with $13\%$ pure Vitamin C, it hits the sweet spot for skincare—delivering noticeable results in fading dark spots and hyperpigmentation while remaining gentle enough for daily use, even for those with sensitive skin who find higher concentrations ($20\%+$) too irritating.

Enhanced with a powerful antioxidant network, this serum protects the skin barrier against environmental stressors like UV damage and pollution, leaving you with a radiant, youthful, “lit-from-within” complexion.

Key Benefits

• Fades Hyperpigmentation & Acne Scars: Effectively targets uneven skin tone, sun spots, freckles, and dark post-acne marks (PIH) to give the skin a uniform clarity.

• Boosts Radiance: Instantly revives a tired, dull complexion by gently revitalizing skin cells and imparting a healthy, natural glow.

• Anti-Aging & Firming Properties: Stimulates the skin’s natural collagen production, helping to smooth out fine lines, improve skin elasticity, and plump up the skin.

• Potent Antioxidant Defense: Neutralizes free radicals from daily sun exposure and environmental pollution, preventing premature skin aging.

Key Ingredients & How They Work

• Pure Vitamin C (Ascorbic Acid) ($13\%$): The gold standard of Vitamin C. It actively inhibits melanin production to fade existing dark spots and prevent new discoloration from forming, while simultaneously brightening the overall skin tone.

• Super Vitamin E (Tocotrienol): A rare form of Vitamin E that has up to 50 times higher antioxidant efficacy than standard vitamin E. When paired with Vitamin C, it creates a synergistic effect that boosts the stability and potency of the serum.

• Hyaluronic Acid: Deeply hydrates the skin to counteract the slight drying effect that pure Vitamin C can sometimes cause, leaving the skin plump and moist.

• Allantoin: A soothing agent derived from nature that minimizes potential skin irritation, calming and protecting the skin barrier during active treatment.

Texture & Finish

• Consistency: An ultra-lightweight, watery, oil-like fluid texture.

• Finish: Glides smoothly across the face and absorbs quickly. It leaves a very slight, dewy, glowing finish upon application without feeling greasy or heavy.

• Scent: Fragrance-free. Because it uses pure, unfragranced Ascorbic Acid, it may have a very faint, characteristic metallic/vitamin scent that disappears rapidly after application.

How to Use & Storage Care

1. When: Ideal for use in your Morning (AM) routine to take full advantage of its antioxidant protection against daylight stressors, though it can also be used at night.

2. Application: After cleansing and toning, apply 2 to 3 drops directly onto your face. Gently smooth and pat it into the skin using your fingertips, avoiding the immediate eye and mouth areas. Follow up with your favorite moisturizer.

3. Sun Protection: Crucial Step! If applied in the morning, always finish your routine with a broad-spectrum sunscreen (SPF 50+), as Vitamin C works beautifully alongside sunscreens to maximize UV protection.

⚠️ Storage & Handling Pro-Tips:

• Keep it Fresh: Because pure Vitamin C is highly sensitive to light, air, and heat, store this serum in the refrigerator after opening to prolong its shelf life and prevent oxidation.

• Seal it Tight: Ensure the dropper cap is twisted completely shut after every use.

• Color Check: The serum is naturally a clear-to-light yellow color. If it turns a dark amber or dark brown color over time, it has oxidized and lost its efficacy. Use within 2 to 3 months of opening