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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Juliana Hargrove from San Francisco, California –
Nestled amid the vibrant streets of San Francisco, I embarked on a transformative journey with COSRX The Vitamin C 13 Serum. After applying it diligently over four weeks, my previously troubled complexion transformed in ways unimaginable! It played its part remarkably in softening those stubborn dark spots and gracefully tightened skin around my eyes—the transformation echoed far beyond mere appearances. Daily applications imparted an illuminating vitality to my visage that sparkled like dawn light cresting hills—improving both hydration levels and reducing visibility of pores has enriched not just outward appearance but radiated inner confidence too.
Jenna Farrow from Toronto (verified owner) –
Yo, so I decided to try out the COSRX Vitamin C Serum ’cause I’ve been looking for something that tackles those annoying spots on my face. After just a month, I’m totally vibing with it! My skin feels more even and way brighter than before — like hello glow-up 😍🙌 And seriously? No irritation at all which is wild considering how sensitive my cheeks can be. It’s perfect if you’re in a pinch but want your skin to radiate confidence! This one goes right into my skincare routine daily.
遼平 大友 from 日本, 神奈川 –
最近COSRXのビタミンCセラムを試してみたんだけど、めっちゃいい感じ！特に目元のシワが気になっていたんだ。これを使い始めてから、あっという間に柔らかくなったし、肌色も明るくなったよ。正直、自分でも驚いている。本当にお手軽で普段使いできるのが嬉しいね。刺激感もほとんどないから続けやすいし、さっぱり感もあるので朝晩ともに楽しみに塗っています！皆にも勧めたいアイテム♪
Kavita Mehta from Mumbai, India –
As someone who thrives in the bustling streets of Mumbai, I’ve experienced the skin troubles brought on by humidity and pollution. A month into using COSRX The Vitamin C 13 Serum, I felt an invigorating shift! Initially skeptical about vitamin serums due to previous experiences with oily residues or irritation, this gem truly stood out for its lightweight consistency. After consistently applying it each morning alongside my yoga routine at dawn, I’ve noticed not just reduced pigmentation but also a newfound clarity in my complexion. Blemishes that once plagued me during monsoon seasons are gradually disappearing—gone is the dullness! Even friends have commented on how vibrant my face looks as we catch up over cups of cutting chai in Colaba!
Marta Eberhardt from Freiburg, Deutschland (verified owner) –
Nach nur einer Woche merke ich deutliche Unterschiede. Falten um die Augen sind gemildert, und mein Teint wirkt strahlender. Absolut empfehlenswert!
Emma from Toronto, Canada –
I’ve been using COSRX The Vitamin C 13 Serum for about three weeks now, and I’m impressed with the results. This serum contains pure vitamin C, which has significantly improved my skin texture. I’ve noticed a visible reduction in redness and dark spots that have plagued me for years. It feels lightweight on my skin and absorbs quickly without leaving any greasy residue. Additionally, it is low-irritant, so I can apply it daily without worrying about irritation—my sensitive skin loves this formula! It’s definitely a staple in my skincare routine now.
Tara from Bristol, UK –
I just gotta say, this COSRX The Vitamin C 13 Serum has totally surprised me! I picked it up on a whim since my skin’s been looking kinda dull lately. Right off the bat, you can feel that moisture kick in—like instant hydration. After using it daily for about three weeks now, I’ve noticed my skin looks brighter and those pesky blemishes are really starting to fade. I love how lightweight it feels too; it’s not sticky at all which is fab! Plus, I’m pretty sure my pores look smaller? Major win there! Can’t recommend enough if you’re keen on keeping your skin fresh.
Emily from Los Angeles, USA –
After using COSRX The Vitamin C 13 Serum for about three weeks, I am thoroughly impressed with the results. This serum contains pure vitamin C which helped improve my skin’s elasticity and reduce redness significantly. I’ve noticed a substantial decrease in dark spots and an overall brightening of my complexion. Its lightweight texture absorbs quickly without any irritation, making it perfect for daily use. The moisturizing properties kept my skin hydrated throughout the day as well. Overall, it’s become a staple in my skincare routine.
Samantha from Austin, USA –
COSRX The Vitamin C 13 Serum is an impressive addition to my skincare routine. I was drawn to its low-irritant formula and the promise of reducing blemishes within weeks. After using it consistently for a month, I’ve noticed significant improvements in my skin texture and reduction in red spots. It has definitely improved hydration levels, making my skin feel plumper. Plus, the antioxidant benefits seem effective as well; I love knowing I’m fighting free radicals too! This serum absorbs quickly without leaving any residue behind—perfect for daytime use.
Jenna from Adelaide, Australia –
I gotta say, I’ve been using COSRX The Vitamin C 13 Serum for a few weeks now and I’m pleasantly surprised. This stuff really works wonders! My skin feels so much smoother, like seriously baby soft. I noticed my pores looking smaller too, which is a game changer. It’s super lightweight and absorbs quickly – no sticky feeling whatsoever. The brightening effect is real; it has lightened some of the dark spots I had lingering from last summer’s sunbathing session! Just a heads up: start slow if your skin’s sensitive since it’s packed with pure vitamin C – but it hasn’t bothered me at all. Honestly, if you’re in the market for an affordable yet effective serum that doesn’t break you out or leave residue behind, give this one a go! Really loving how my complexion looks lately.
Jasmine from Portland, USA –
Alright, so I’ve been using COSRX The Vitamin C 13 Serum for a little over a month now, and let me tell you—I’m kinda blown away! I was super skeptical at first since I’ve tried plenty of serums that just didn’t cut it. But this one? It’s smooth as butter on the skin. My favorite part has to be how hydrating it feels without any greasy residue. I noticed my blemishes starting to fade after about two weeks; they weren’t kidding about fixing spots! Plus, my skin’s felt way firmer around the eyes which is honestly such a relief considering all those late-night Netflix binges (oops!). All in all, it’s definitely becoming a staple in my routine—just gives me that fresh glow every morning. Definitely recommend giving this one a whirl if you’re lookin’ for some vitamin C magic!
Lily from Melbourne, Australia –
Honestly, I’ve tried a few Vitamin C serums in my time, but COSRX The Vitamin C 13 Serum really takes the cake! After just four weeks, I’ve noticed significant improvement in my skin’s texture. My blemishes are fading and those pesky dark spots seem less visible—like they’re going into hiding! What I love is that it doesn’t irritate my sensitive skin at all. It’s super moisturizing too; no more dry patches for me. The lightweight formula absorbs quickly and keeps my face feeling fresh all day long. Plus, it feels good to know I’m using something with solid antioxidant power!