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

It definitely does smell like spam LOL. But that’s ok because I find once you shake the bottle and apply it at night, you can’t smell it anymore. It also helped to take most of my big acne away! I use it on top of a rice toner at night with some moisturizer and it has helped more than my medication for acne. Highly recommend!! But def wear sunscreen every morning after using it. I have acne prone skin that’s super oily and sometimes dry. It worked well to reduce oil as well. I still need something else to completely get rid of the small bumps and white heads but I’ll be rebuying this too.

First time with this brand, but using Vit C serum for years.So far one of my favorites in the range of price. Smells uncomfortable fishy but that is the Vit C normal smell, after some seconds over the skin the smell is gone, and personally prefer this than any extra essence. The oil is pretty thin and absorbs immediately. Haven't had any reactions but I have quite of time with this VitC concentration. I like how my skin looks, give me a glossy renewed look every morning. Any result with dark spots or fine lines, but I realized that is normal aging and nothing to do with it lol, anyway my skin looks healthy and younger for my age. Totally happy with this brand in my second week of use.Update: one month of use and still love it!

I've been a huge fan of Cosrx products. I originally had used the lower strength of vitamin c and upgraded to this one a few months back. I feel that it does work in terms of discoloration, but for some reason this one makes me break out more than other vitamin c products I've used. I'm going to finish up what I have left of this bottle but I think I'll go back to the lower strength. My only complaint with the Cosrx vitamin c is how small the bottles are. It could be because vitamin c doesn't last long in terms of potency once opened, but it's a bit pricey for such a small bottle. You definitely have to keep it in the fridge and the smell is strange and not very pleasant but goes away shortly after application. I have not noticed any stinging or irritation from this higher strength vitamin c, but like I said, I have noticed acne break outs happening a bit more than before. My recommendation...give it a shot if you've already used the lower strength and feel you need more potency, but beware of potential break outs.

I’ve seen a lot of improvement in my skins texture and tone over the past 3 months. My skin Is much softer and my freckles and dark spots have become less noticeable. The serum is oily and spreads easily. It does have somewhat of an odor (like bread). I think for the price it’s great product.

After showering on a Friday evening, I applied the serum to my face. The smell was absolutely disgusting, but I was prepared for that having read the reviews. I had no negative skin reactions. A couple of hours later I started to get a headache. I took some ibuprofen, put the heating pad on my head, and went to sleep. I woke up at 3am with a terrible headache and I felt nauseous. I want to note that I get frequent migraines and that this was not a migraine headache. It was a painful tightness all around the top of my head. Also, I realized that the heat from the heating pad was reactivating the smell of the serum on my face, which was really gross. When I finally tried to get up and move around at 7am it was awful. I felt like I had the stomach flu. Sweating, shaking, nauseous. And then I threw up. I really did think I was sick and didn’t even consider the serum until a few hours later. I talked to my sister and mentioned my thoughts about the serum. She suggested that I take a long hot shower to try and get it all off of me and to change my bedding. So I did, and by the end of Saturday I was feeling not 100% but so much better. I haven’t seen any other reviews that mention this type of reaction. I tried googling it too and found nothing, so obviously this could be some kind of weird coincidence that I got sick for a short time while trying to use this product. Either way, I’m too scared to try it again. The smell alone might make me sick anyway. Good luck!

ANOTHER UPDATED POST: bought my second bottle. Still smells awful, but I was excited given that the first bottle helped my skin. The first time, the box did not have any ingredients, and I could not find the information online. I specifically did not want to use product with tocopherol. Well, this time, the box did have ingredients, and I am delighted to see that the vitamin e is sourced tocotrinels, but my excitement was short lived as I saw tocopherol was on the list as well (see photo). I will still use this since I opened the bottle, but I won’t be buying again. From four stars to three.UPDATED POST: This still smells awful, but I must be getting used to the smell, or ignoring the smell because the product has made my skin smoother and more radiant. I just finished my first bottle and contemplating if I want to buy another. Bumping this product from two stars to four stars.ORIGINAL POST: This is the worst smelling vitamin C serum ever. I dont want one that is strong in fragrance, but this literally smells like gas I feel like I am getting drunk while smelling the scent when I use it on my face. This is awful awful awful. I can’t get past the smell to see the results. The smell does not disappear, despite what other reviewers claim. I can still smell the serum an hour after initial use.