COSRX Pure Vitamin C 23% Serum with Vitamin E & Hyaluronic Acid, Brightening & Hydrating Facial Serum for Fine Lines, Uneven Skin Tone & Dull Skin, Korean Skincare, 0.7oz/20g

This serum works, I can’t fault it even though my skin became red. It was only when I read it I realised I applied it wrong and can’t use it directly. Follow the instructions to avoid this. That’s how you know this is a true vitamin c! And potent!

5-Star Review: The COSRX Vitamin C23 serum is an absolute powerhouse! Packed with Vitamin E and hyaluronic acid, it has transformed my skin. As someone with Indian skin living in the UK, I’ve struggled to find a serum that absorbs well, but this one works beautifully. It sinks right in, leaving my skin hydrated, radiant, and noticeably improved. Yes, there’s a slight smell when you first apply it, but it fades almost instantly. Honestly, it’s a small trade-off for the incredible results. My skin feels smoother, more even-toned, and healthier overall. I’m just loving it and can’t recommend it enough!

I didnt get irritated with the amount of vitamin c in it. However it oxidazied quick. It brightens the face, its stick on the face a bit.

This is the first time I’ve used this particular product from COSRX. I thought I’d give it a try because it was at a very good discount for black friday. I’ve got dry sensitive skin and minor rocesea so was a bit worried if I’d get any reaction from it but my skin was fine. I do put cosrx advance snail mucin first and then apply the vitamin C. It does have a weird smell as mentioned by others but I don’t mind it because as soon as you’ve applied it onto your skin the smell is gone so not sure why people are making such an issue out of it. I’ve been using it for a couple of days now and my skin seems to like it and I notice my skin is brighter and soft even after a nights sleep.

I'm extremely disappointed with this vitamin C serum. Not only does it fail to deliver on its promises, but it's also a hassle to use due to its terrible staining properties. Every time I apply the serum, it leaves unsightly yellow stains on my fingers. It's embarrassing and difficult to get rid of. But that's not even the worst part - it also stains my grey beard, leaving noticeable yellow streaks that are impossible to remove. As for its supposed benefits, I haven't noticed any improvement in my skin's texture, tone, or brightness. It's like the serum is just sitting on my skin, doing nothing. The combination of poor performance and annoying staining issues makes this product a complete waste of money. I would not recommend it to anyone. Save your cash and look for a vitamin C serum that actually works and doesn't leave you looking like a walking banana.

Very good product

I am a big vit C lover and I’ve used the medik8 and the other higher brands and this is just as good or better! It’s a slight oil consistency but soaks in quickly and feels so lovely on the skin! I absolutely love this and will buy my 2nd bottle. Keep in the fridge!

I’m a big fan of COSRX products, but unfortunately, I won’t be reordering this one. The serum itself is lovely — I didn’t mind the scent, and it felt great on my skin — but I was shocked when the bottle turned out to be empty after just a few weeks. The opaque black glass makes it impossible to see how much product is left, but it must have been less than half full to run out so quickly. So disappointing.

its kinda of sticky, but it does good to my skin. I dont rub it but just tap it to my face, every other day.

Very good product well worth the money and very fast delivery

Riecht etwas unangenehm, aber erfüllt trotzdem seinen Zweck und mit 23 % halt schon ein "Biest"! Die Koreaner halt, gell?

بنات ما يسوى ابدا تاخذون شي مو موثوق لانه رخيص وتعالجون بشرتكم لشهور اولا ريحته كريهة جدا كانها ريحة فاصوليا معلبة بدون مبالغة وهذا الشي كان ممكن يكون محتمل لو انه منتج فعال سبب لي حبوب حمراء اول مره اشوفها بوجهي وقعدت اعالجها لفترة، بشرتي دهنية طبعا استخدمت تونر من نفس الشركة وبرضو ماهو احسن منه، بس متأكدة ان هذا السيروم سبب الحبوب لاني حسيت الحبوب خفت بعد ما وقفته حتى مع استمراري على التونر كان يحرق كمان مع اني سويت اختبار على رقبتي وقلت ممكن طبيعي بما انه فيتامين سي انا ما اعرف اذا المنتج مو اصلي او مكوناته ما ناسبتني بس عموما ما يسوى تعيشين بهالقلق بعدوا عنه احسن

I have been using the COSRX Pure Vitamin C Serum with Vitamin E for a while now and I really love it. At first, I noticed it has a slightly weird smell. It is not unpleasant but definitely unique compared to other serums I have tried. Once you get used to the smell, it is no longer a problem. What I really like is how it feels on the skin. The texture is very lightweight and it absorbs quickly without leaving any sticky or greasy feeling. It gives my skin a fresh and real sensation as if it is doing something beneficial deep down rather than just sitting on the surface. Since using this serum regularly I have noticed that my skin looks brighter and more even toned. It feels softer and smoother. The added Vitamin E helps with hydration and nourishes my skin. I also appreciate that it does not irritate my skin even though it can be sensitive sometimes so it is gentle yet effective. Overall despite the odd smell at first the performance of this serum makes it totally worth it. It feels like a high quality product that works well and I would definitely recommend it to anyone looking to improve their skincare routine with a Vitamin C serum that actually delivers results.