The Vitamin C 13 serum 20ml

COSRX The Vitamin C 13 Serum (20ml)

Use every day like a daily vitamin for your skin! A gentle, water-based vitamin C serum formulated with 13% pure ascorbic acid that provides moisture and absorbs quickly without stickiness. Lighter and more refreshing than the Vitamin C 23 Serum, this lower concentration makes it perfect for daily use and ideal for vitamin C beginners or those with sensitive skin. Regular use will fade blemishes, dark spots, freckles, and hyperpigmentation while improving overall skin tone and texture. Enhanced with Tocotrienol (Super Vitamin E) which boasts up to 50 times greater antioxidizing efficacy than regular Tocopherol, plus stable vitamin C derivative (3-O-Ethyl Ascorbic Acid) for added stability. Enriched with brightening boosters including niacinamide, glutathione, and licorice root extract, plus hydrating ingredients like hyaluronic acid, panthenol, and allantoin to provide moisture and relieve irritation. The non-sticky, lightweight, watery texture absorbs quickly and has a slight yellowish tint indicating it contains pure vitamin C. Free from fragrances, parabens, sulfates, and silicones. 20ml (0.67 fl.oz) compact size perfect for travel or trying vitamin C for the first time.

Daily Brightening & Anti-Aging Results

• Clinical Excellence

Cruelty-free, reef safe, free from fragrances, parabens, sulfates, and silicones, suitable for all skin types including sensitive

• 13% Pure Vitamin C Technology

Optimal concentration for daily use provides effective brightening and collagen-boosting benefits without overwhelming sensitivity, perfect for beginners to vitamin C

• Super Vitamin E Synergy

Tocotrienol provides 50x stronger antioxidant protection than regular vitamin E, working synergistically with vitamin C for enhanced photoprotection and anti-aging benefits

Perfect For

✓ Daily vitamin C use ✓ Vitamin C beginners ✓ Sensitive skin ✓ Hyperpigmentation & dullness

Key Benefits

Fades dark spots, blemishes, and freckles | Improves overall skin tone | Boosts collagen production | Reduces fine lines and wrinkles | Provides antioxidant protection | Brightens dull complexion | Refines pores | Fades acne scars | Hydrates and soothes

Key Ingredients

• Ascorbic Acid (13% Pure Vitamin C) - Gold standard form of vitamin C that fades hyperpigmentation, boosts collagen production, provides antioxidant protection, and brightens skin tone

• 3-O-Ethyl Ascorbic Acid - Stable vitamin C derivative that is soluble in both water and oil, easily absorbed, and converted to pure vitamin C in skin

• Tocotrienols (Super Vitamin E) - Advanced form of vitamin E with up to 50x greater antioxidant efficacy than tocopherol, provides superior photoprotection

• Tocopherol (Vitamin E) - Works synergistically with vitamin C for enhanced antioxidant protection and UV defense

• Niacinamide - Brightens, fades dark spots, refines pores, and strengthens barrier

• Glutathione - Master antioxidant with skin-lightening properties for overall brightening

• Sodium Hyaluronate - Provides deep hydration and plumps skin

• Panthenol (Vitamin B5) - Soothes, hydrates, and strengthens moisture barrier

• Acetyl Glucosamine - Enhances exfoliation, brightens, and works synergistically with niacinamide

• Adenosine - Anti-wrinkle ingredient that improves elasticity and reduces fine lines

• Allantoin - Soothes and calms irritation

• Caffeine - Antioxidant that reduces puffiness and brightens

• Squalane - Lightweight emollient that moisturizes without greasiness

• Glycyrrhiza Glabra Root Extract (Licorice) - Natural skin-lightening agent that brightens and reduces hyperpigmentation

• Gardenia Florida Fruit Extract - Natural colorant with antioxidant benefits

Full Ingredients List

Water, Ascorbic Acid (13%), Butylene Glycol, Dipropylene Glycol, Tromethamine, 3-O-Ethyl Ascorbic Acid, Panthenol, Acetyl Glucosamine, Caffeine, Sodium Hyaluronate, Sodium Sulfite, Disodium EDTA, Glutathione, Adenosine, Gardenia Florida Fruit Extract, Allantoin, Dextrin, Squalane, Tocotrienols, Tocopherol, Elaeis Guineensis (Palm) Oil, Arginine, Niacinamide, Pentylene Glycol, Glycyrrhiza Glabra (Licorice) Root Extract

How to Use

Daily Vitamin C Routine

• After cleansing and toning, apply a few drops of serum to the skin

• Use fingertips to gently massage and absorb the serum, starting from the inside of the face working towards the edges

• Follow with moisturizer

• Use morning and/or evening (morning use recommended for antioxidant protection)

• ALWAYS apply broad-spectrum SPF 30+ during the day when using vitamin C

Advanced Usage Tips

• Start with once daily application (preferably morning) and increase to twice daily as tolerated

• For sensitive skin, start every other day and gradually increase frequency

• Store in a cool, dark place to maintain vitamin C stability

• Slight yellowish tint is normal and indicates pure vitamin C content

• Can be used alone or layered with other serums (apply vitamin C first)

• If upgrading from this, try COSRX Vitamin C 23 Serum for higher concentration

• Safe to use with niacinamide despite old myths - this formula contains both!