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

Stop crying because it stinks
Do you want it to smell good or do you want it to work?This serum is not for everyone. If you are serious about skincare and want authentic ingredients, at an affordable price…. Whoop there it is!Thank you COSRX for creating this high percentage vitamin C serum and not adding any extra fluff, like fragrance. Korean skincare meets American approach.It’s been a week, and I can see it working, already.

No irritation on my rosacea-prone skin – so far
(I reordered – so this will become a go-to product for me!)—-I like the CosRx brand. It’s one of my go-to brands along with Beauty of Joseon (such a gorgeous brand of skincare!, Belif (sometimes and some things), and Gangnam Glow, along with a few others. CosRX & BOJ are the two I have been reaching for more than any others, lately.This vitamin C isn’t L-ascorbic acid but it is ascorbic acid–although sometimes there is confusion there if they are the same or not.The price like a lot of K-Beauty brands is very reasonable.I keep mine in the fridge. I have had vitamin C oxidize and when it does it’s a waste of money since it’s no longer effective when it turns orange. The color of your C should be light, like, well, like very hydrated pee – sorry, that’s all I can think of to describe it! 🙂 When it begins to turn orange, you should not use it. So refrigeration, or maybe if you use it within 3 months it may be okay.It does fizz when you open it. I’ve never had this happen with a serum. Kind of weird. As for the smell – well I have Parosmia from Covid a few years ago that I still have trouble with some scents and odors. I had a friend smell it and he said it smells like tuna, and that’s what I thought – it smells like tuna smells to me with Parosmia. Not pleasant but it doesn’t last. Also, keeping it in the fridge seems to make that smell not as bad, that or I’m used to it now.I use my C in a very specific way: I only use it in the mornings. I first cleanse my face (I use BOJ ginseng oil based cleanser), and then I will tone it with either Belif milky toner, BOJ ginseng essence if I’m using that as a toner that day, or CoxRx centella asiatica toner. Then I go do something – take my dog out, have some coffee – anything that takes about 20 minutes for the toner to absorb and my skin to be dry. Then I apply my vitamin C. I then let the C absorb by checking my emails or looking on Amazon or whatever – for 15-20 minutes. Then I go on with the rest of my skincare – serums, moisturizer, SPF if I am going to be leaving the house. I like to let each step absorb but I don’t necessarily go the full 15-20 with the serums and moisturizers as I do the C.This does not irritate my skin. I did do a patch test as they advise. I put some on my inner arm, but I also put some along my right jawbone just on the bottom part of my cheek. I let that sit for hours until I knew it was okay.However, it is 23% and in hindsight I wouldn’t go above 20%, especially with my rosacea prone skin. 20% is plenty high enough. 10% is on the lower end. So 10-20% is the ‘sweetspot.’ Just because I”m not reacting now, doesn’t meant my skin won’t be mad later. I try to use my lower concentrate from another brand sometimes instead of this.Vitamin C works well with and for my skin. I do like L-ascorbic acid products but really if you are using a retinoid (tretinoin) or some other stronger retinol, this products that aren’t expensive work lovely.Would I order again? Probably will not. But I’d like to find a K-Beauty vitamin c that has ferulic acid along with the c, as this one does not.As with any skincare, you have to give it time. These things don’t happen overnight. Consistency is key.

Did this make me sick?
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!

Deep hydration and shine
Excellent product, it hydrates and brightens the skin, highly recommended

Very good product well worth the money and very fast delivery

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.

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