I still haven’t tried mine but i wish the shelf life ans size were more the

This serum comes in a 20 g black glass bottle, contains a highly 23% of pure vitamin c, it has a yellowish color, the texture is light and absorbs fast. Unfortunately the finish is sticky and the scent is very strong and unpleasant. This serum claims to even skin tone and improve the look of wrinkles, I haven’t notice a change but I think that it takes more time to see visible results. Other downside is that the pao is very short, only 2 months so I will probably end up using it on my body.

Feels like a light oil texture - easy to spread & absorbs well. A little dewy so I let it set for 2mins before next step. I don't really get acne but I've seen results with overall skin dullness. Wake up to a even skintone & healthier "glow." I treat this as MULTIVITAMINS for my skin, duo Vit C & Vit E helps overall skin health as anti-aging antioxidants.

Vitamin C will always be my favorite component in skincare. I love that this is formulated with vitamin e as well as hyaluronic acid for a hydrated and bright look. My skin after using during both day and night has seen an improvement in texture and a not so dull appearance. It is slow to fade my acne scars however with consistency I know it will fade. Overall I have nothing but good things to say about this serum and it is my favorite one out of the Derm Serum Trio. This is perfect to layer with the other two serums and I love that it doesn't sting like most vitamin c serums.

Contains a highly concentrated, stabilized form of pure Vitamin C along with Super Vitamin E and hyaluronic acid that targets acne scars, fades hyperpigmentation, firms the skin texture and helps moisture retention. Then has the soothing and regenerating effects of Allantoin, to improve the appearance of damaged skin.

 

I usually use a lower concentration of Vitamin C due to my sensitive skin but I was pleasantly surprised that I had no irritations with this. It does have a bit of an oily consistency and slight tacky feeling on the skin but sinks in once rubbed in. It definitely has that typical vitamin c smell (think hot dog lol) but dissipates within seconds. It left my skin smooth, supple and brighter.  

COSRX The Vitamin C 23 serum 20ml This serum has a unique smell, the texture is a yellow liquid that absorbs quickly. What I feel after using this serum is that my face is brighter and healthier but I don't like it because it is sticky after use.

Textura oleosa, la absorción no es tan rápida como los otros sérums, al principio senti un poco de hormigueo pero con el uso se desvaneció la sensación, pero nunca fue irritante, deja una sensación oleosa en la piel; si tu piel tiende a grasa te recomiendo usarlo únicamente de noche y por lo menos 1 hora antes de dormir para que no dejes el producto en la almohada. Este sérum es la competencia directa del sérum de 23% de TIAM con excepción que el de TIAM no deja la sensación oleosa. He sufrido de un pequeño brote que me dejo algunas marcas y en la semana que lo utilice pude ver una ligera mejoría, con el uso de al menos 1 mes se deberán ver mejores resultados. Probado en tipo de piel: Mixta con tendencia a grasa. No recompraría porque no siento que sea compatible con mi piel, pero si tu piel tiende a seca es una excelente opción.

This concentrated vitamin C derm serum was developed with maximum effectiveness and minimum irritation, thus making it useable for those with sensitive skin. This serum comes with a special cap that helps seal the serum while controlling the gas generated inside the container by the vitamin C. There are quite a few cautions that come with this serum, which can be a bit alarming at first, but overall they make sense and are to maintain the vitamin C properties for as long as possible. It's just new for me that a product comes with more warnings than "avoid eye conact". I have sensitive, combination, acne-prone, maturing skin, so all aspects of this serum are appealing! I tried it every other day at the beginning to get my skin used to the potency of the vitamin C. I did noticed changes after the first use where my skin looked more radiant. I was surprised how much more quickly my acne scars were fading away. The serum didn't seem to irritate my skin at all! I really like it!

Most vitamin c products are to harsh for my sensitive skin but this is one of the first that actually works for me! My skin looks so bright and healthy

Although the scent of this vitamin C isn't the nicest, after using it for a week, results were visible! I appreciate that it didn't sting or feel too heavy on my dry skin, but for others with oily skin might feel like it's a bit heavy. Will keep using this until it runs out, and if you're searching for something to lighten hyperpigmentation and acne scars, this might be the one for you

COSRX has finally developed a vitamin C serum that is hypoallergenic and safe for even the most sensitive skin. This highly concentrated product is made with 23% pure vitamin C, vitamin E, and hyaluronic acid and helps to fade acne scars and hyperpigmentation, brighten dull skin, and diminish fine lines and wrinkles. I haven't been using this long enough to notice a change in scars or hyperpigmentation, but I have noticed a brightening of skin tone. Because this product must be kept in the fridge, it provides you with a refreshing, cooling sensation in the morning.

23% Ascorbic Acid, Panthenol, Squalane, Caffeine, Vitamin E, Niacinamide this has definitely proven to be effective against my hyperpigmentation without causing irritation. There are a LOT of skin soothing and emollient ingredients in here however it does come at a cost. The serum feels very tacky upon application. It’s best applied right after cleansing. It’s best suited for someone with good experience with Ascorbic Acid. - PAO 2 Months - Refrigerate after opening - Feels Tacky - Skin experienced purging

I love this serum and I plan to continue using this product. Stored in a 30ml glass bottle, 2 months PAO and needs to be refrigerated once you open it. It has a clear gel texture with a runny consistency it smells like citrus but it goes away once it spreads on your skin. the first week I applied this serum daily but I noticed it made my skin look dull. i don't know maybe vitamin c 23% is too high for my skin or maybe my skin is not getting enough hydration or over exfoliating. but after that i reduced the usage to 3 times a week and it worked great. It doesn't dry out my skin anymore and it made my skin glow and feel better.After 3 weeks,I noticed that my skin has changed significantly.my skin is definitely getting brighter. The texture also improves and becomes softer and smoother.

Cosrx formulated this low irritating serum with highly concentrated 23% pure VIt C, HA & VIt E. Claims to brighten the skin, even skin tone & improve wrinkles. Ingredients worth mentioning on top half of the list - Ascorbic Acid (23%) - Panthenol - Squalane - Caffeine - Hyaluronic Acid - Glutathione - Adenosine My Experience: The moment I received it I tested it on my hand & it felt too oily. I placed it on the fridge & used on my next skin care. The texture is light yellow with noticeable oil in it—probably the squalane. With that said, I tend to shake this before use. I used 3-4 drops and it actually felt ok & was not as greasy or oily as I feared. I even layered this with my usual skin care and it absorbed pretty well. Pls note that I hv dry skin. I mainly use this at night & stopped retinol for now. I’ve used it longer now and noticed some brightening effect & some improvement on my texture esp on the forehead. Note that this is only good for 2 months.

This is the 3rd formulation of the vit c serum and there's been alot of hype surrounding it. The golden colour of the liquid makes it seem oxidised already but the colour hasn't changed since I opened it. I keep it in my baby fridge to keep it fresh.⁣ It oddly smells like hotdogs, yes hotdogs but it disappears pretty fast. The texture is smooth and it sinks in quickly although it does leave a slight residue. I have started to see slight brightening on my skin so I'm going to continue using it to see if I get any more results

#yeppujicare Experience ☘️☘️☘️

I don't usually rave about products, but I need to for this serum. It's the best vitamin C I have ever tried and is on my 2022 holy grail list. The texture is light and absorbs quickly into the skin. As a result, my pimple dark spots under my chin have been lightening. Also, the sunspots on my cheeks are less visible. Another fantastic thing I've noticed is that my forehead feels less dry and uneven. The vitamin c truly gives me a nice glow throughout the day. I received this product for free from @cosrx and @stylekorean_global for an honest review.

Vitamin C is such a great ingrediant to brighten the skin and help to fade the acne scars and blemishes..This can be best used in mornings and after applying vitamin c serum must apply sunscreen before going out..

The packaging with a specially designed cap to seal Vitamin C. Vitamin C serum with an oil based texture that is light and easily absorbed. The feel makes the skin smooth and the finish leaves the skin glowing and healthy. I love this product even though it's a little sore in some sensitized areas, but so far I like to use this because this serum is an antioxidant booster that can help lighten and disguise acne scars quickly. The first Pure Vitamin C serum that made me fall in love with vitamin C. The antioxidant effect and disguise dark spots on the skin is quite noticeable and what I like the most is that it makes my skin glow after using it. Good to use together with The Hyaluronic Acid 3 Serum

I will fully admit to being nervous about trying this one. 23% Vit C was more than I have used, ever. There was no need for worry. I’ve been using this nightly, & already seeing wonderful results. I store it in a cool place, follow all directions on the packaging. I was so impressed with the care taken in this packaging & in the detailed directions enclosed. Thank you Cosrx. That gave me comfort. I feel a slight tingle when I apply this sometimes (more so if I have exfoliated recently), it goes away quickly, & I’m left with a slight warmth on my skin. They truly were able to deliver a high potency Vitamin C serum, that does not have a negative effect on my skin. Much lighter weight than I expected, & absorbs so quickly. I started with just a couple drops, but have worked up to about 5 drops & no oily feeling at all.

My second favorite Cosrx serum has to be the Vitamin C 23 serum. This was my first time dabbling in a high percentage vita C serum. I had no problems; however, I do not have very sensitive skin so take it with a grain of salt. I have only used this sparsely since I have been in the sun a lot. Every time I used it in my PM routine, I had no irritation or reaction. I did notice a mild bit of purging after so first used it. I love that this formulation also contains many great hydrators, panthenol, squalane, and sodium hyaluronate. I find it’s slowly helping reduce my hyperpigmentation. I will have to produce an update when I have to finish the serum in 2 months! My only big qualm with this serum is it’s very tacky. Thanks to my Instagram friends I find the best way to use this serum and reduce the tackiness factor is by adding this product first before toner.

The highest concentration of serum for Vitamin C! This Vitamin C serum is tinted yellow and feels a bit sticky when applied. I am not a fan of the smell of this product, it reminds me of metal. However, when you apply it, your skin feels hydrated and glowy. This serum doesn't have a long shelf life as it will oxidize; it has to be used within 2 months after opening. I haven’t used this product long enough to see results like acne scars fading.

I really like this stabilized form of vitamin C. It appears to be stronger but not harsh or damaging. My skin really looks a lot brighter and more healthy.

Maximum effectiveness with minimum irritation! Highly concentrated, 23% pure vitamin C serum that fades acne scars and brightens complexion to revitalize dull and dry skin.⠀ Benefits: Fades acne scars & hyperpigmentation Brightens dull skin Diminishes fine line & wrinkles It is really interesting when I first opened this serum, It sounds like opening a soda! This should be really fresh Vitamin C serum! It is like a light weight fish oil texture! The smell is also like fish oil! The color of the serum also is golden color like oil! But it absorbed quickly when applied on the face! Not as heavy as I expect when I first test that texture on my hand! It is great to use with The Hyaluronic Acid! Not irritation！My skin has a bit of acne marks. I look forward to keep using it to reduce more of my acne marks!

This Vitamin C serum has an incredible oily texture but glides beautifully over the skin and sinks into the skin quickly without feeling oily or heavy. Skin feels noticeably smoother and lightly hydrated after application. I experienced no tingling or warming sensations after application, even though the serum has a very high concentration of vitamin c. Despite the initial oily texture, I found that this serum slid easily into my morning routine and didn’t cause any pilling with my sunscreen, which is a problem I have encountered before with oils. After a few applications, I noticed a slight improvement in my post-acne inflammation but would have to use it more long-term to gauge its effects on acne scarring and signs of ageing.

Cosrx The Vitamin C 23 Serum - highly concentrated 23% Pure Vitamin C stabilized formula that has Super Vitamin E & Hyaluronic Acid. This Vitamin C 23 Serum fades scars & hyperpigmentation, brightens dull skin and helps reduce fine lines & wrinkles. This serum works on sensitive skin with little to no irritation. Apply a few drops to clean face with fingers and tap to absorb, follow with SPF. This serum is lightweight but it does take awhile to absorb & left a sticky texture on my skin. Serum must be stored in the refrigerator.

COSRX never disappoints me with their skincare products!! ❤ I just love the light texture of this vitamin c serum and how it easily absorbs into my skin. It's gonna be my most favorite vitamin c serum from now on!!