* COSRX The Vitamin C 13 Serum

Fix blemishes on the inside and outside of the skin in just 4 weeks with our moisturizing tone control serum.

* Key Benefits
Elasticity Improvement
Antioxidant: Helps inhibit skin aging.
Moisture Content Improvement: Hydrates the skin instantly.
Reduce Pores
Skin Texture Improvement
Wrinkle Improvement: Especially around the eyes.
Triple Complexion: Reduces red, yellow, and dark skin tones.
Pigmentation Improvement: Reduces visible and hidden spots and blemishes.
Noteworthy Attributes:
Made from pure vitamin C.
Has completed the antioxidant test.
Low-irritant formula perfect for daily use.
Antioxidant power maintained for 120 hours.
In-vitro test results: 77.5% inhibition rate of free radical generation after 120 hours.

* User Testimonials
"Looking for a Vitamin C Serum? COSRX products seem the best... Less irritation and good for daily use. Highly recommended!"

"Was searching for a pure vitamin C product. The Vitamin C 23 Serum was good, but I think Vitamin c13 is great for daily use."

* Research & Results:
Studies from the Derma Cosmetic Dermatology Research Institute between 2022.10.26 and 2022.11.25 on 21 women aged 30-65 showed:
Moisture Content Improvement: 113% after a single use.
Reduction in Skin Irregularities: Significant improvement based on certain areas.
Pigmentation Improvement: Visible blemishes and spots reduced.
Wrinkle Improvement: Around the eyes reduced by -10.6%.
Pore Improvement: Reduction in volume, area, count, and depth of pores in just 7 days.
Elasticity Improvement: Surface elasticity increased by 19% in 4 weeks.

* Ingredients & Formula
Pure Vitamin C: For brightening and anti-aging benefits.
Tocotrienol (Super Vitamin E): 50 times more potent than tocopherol.
Hyaluronic Acid: Provides intense hydration.
Allantoin: Soothes the skin.

* Recommendation
Experience the bright tone-up effect.
Moisturize and brighten dull skin.
Use a hypoallergenic vitamin serum daily.
Choose COSRX.

* Application
After washing your face, use the dropper to take an appropriate amount.
Apply to the cheekbones.
Roll it from the inside to the outside, following the skin texture.
Focus on areas where elasticity is a concern.
Follow up with other skincare products, moving from the inside of the face outwards.
Note: If using during the day, always apply sunscreen.

* Storage and Handling Precautions
Use immediately after purchase.
Store upright in the refrigerator (3-10°C).
Avoid shaking before opening.
Product may discolor due to oxidation; recommended use within 2 months of opening.
Store away from high temperatures and direct sunlight.

* Environmental Effort
COSRX promotes eco-friendliness. Please dispose of empty containers responsibly.

* Complementary Product
Use with Aloe Soothing Sun Cream with SPF 50 for best results.