Description
* 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.
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Maja – Warsaw, Poland –
Serum działa. Widzę poprawę na mojej cerze po dwóch tygodniach używania. Łatwo się wsmarowuje i szybko się wchłania. Fajnie, że zawiera czystą witaminę C.
Mason – Sydney, Australia –
Works nicely to brighten my complexion. My dark spots are getting lighter after using for two weeks. Absorbs quickly, no greasy feel at all.
Leilani Kira-Maui from Hawaii, USA (verified owner) –
エネルギーに満ちた美しさが蘇る。このセラムを使用した日々、明るく滑らかな感触が伝わります。間違いなく愛するアイテム！
Chiara from Rome, Italy –
Hey, Chiara here! So I’ve been using the COSRX Vitamin C Serum for a month now, and wow—what a ride! It really transformed my routine. Seriously noticed brighter vibes on my complexion—the glow is undeniable! The texture’s become smoother too; bye-bye unevenness and those pesky dark spots I hated. Didn’t experience any irritations or crazy breakouts which totally scores high in my book 🤗 Plus it feels fresh as early morning dew when applied. Def grabbing another bottle before summer hits Rome hard!