COSRX Pure Vitamin C 13% Serum with Vitamin E & Hyaluronic Acid, Brightening & Hydrating Facial Serum for Fine Lines, Uneven Skin Tone & Dull Skin, 0.67fl.oz/20ml, Animal Testing-Free, Korean Skincare

The COSRX Pure Vitamin C 23% Serum has quickly become one of my favorite brightening serums. It’s strong enough to make a visible difference in dullness, uneven skin tone, and fine lines, yet the formula feels balanced thanks to the addition of vitamin E and hyaluronic acid. I noticed my skin looking fresher and more radiant within a few weeks, and with consistent use, my complexion feels smoother and more even. The texture is lightweight, absorbs well, and doesn’t leave a heavy or sticky finish. If you’re looking for a powerful yet hydrating Vitamin C serum, this one really delivers. Just remember, like with all skincare, patience and consistency are key to seeing lasting results.

I had been dealing with breakouts and rough, uneven skin, so I went on the hunt for a Vitamin C serum. It’s so easy to feel overwhelmed with all the options! I chose this one for its great price, excellent reviews, and Corsx’s solid reputation. After using it for just a week, my skin looks healthier, clearer, and more even-toned. I’m beyond happy with the results and would definitely recommend it! The smell’s a bit funky, but it really works, and that’s all that matters to me!

Really lovely, good for evening dark spots and creating a glow. You have to keep it in the fridge and it does stink. If your skin can tolerate it, I’d definitely go up to 23%. Best to use at night, as it does react with moisturiser (not in a painful way), meaning you can get orange tide marks.

Did Cerave Vitamin C at the beginning for about 3 months. After which I felt ready for straight ascorbic acid but at a strength that wasn’t too radical. Did not sting, was not reactive (which was great for sensitive skin) and appears to be working well. A bit inconvenient with storing it in the fridge. Other than that, perhaps I am a freak cos most everyone has complained about the aroma of this product, but I love it because I know I am putting on the real thing. Sides, the smell of canned tuna doesn’t stay with you, it dissipates rather quickly. Highly recommend.

I love CosRX but this stuff absolutely STINKS!! It smells so bad! 😅 it's horrible lol I need to hold my breath when I put it on!

This has always been my favourite vitamin C serum. It does have a smell like all vitamin C or ascorbic acid serums, but fades within seconds. Do bear in mind that these serums must be kept refrigerated or they will oxidise.

Very good 👍

This is my 4th bottle and the most gentle vitamin C serum I have ever use. Suitable for sensitive skin. Noticeable effect after using second bottle.

Lo he estado usando junto con la niacinamida de la misma marca y me encanta cómo deja mi piel hidratada y con mis poros más chicos, llevo 1 mes usando este combo.

こちらを使うようになってから肌を褒められる機会が増えた 何度もリピート購入しています

My bottle is empty after 1 month…. So weird! i only use it at bedtime. Sort of feel i was duped or ripped off.

I really like this product. It works wonders on my skin (28M), brightens it and make it more even. Just be aware that the texture is very watery and not "gel-like" at all. The smell is also pretty strong and surprising, not very pleasant, but it goes away once dried so I have nothing to complain about.

Je ne le mets que depuis deux semaines et les bienfaits sont impressionnants. Le produit est magique. N’oubliez pas de mettre la crème solaire après !!!