I’ve been using this for a few days now and I haven’t broke out so I’m SO glad this works for me. This is stronger than other Vit C serums, so be careful! I used it today without using a toner first and felt a tingling sensation. Giving it 4 stars because I’m not a fan of the smell.

I love love love

I love the fact that it's not sticky. It absorbs into the skin right away!! Other than the strong smell, it doesn't sting and is great find!!

Good one. Definitely repurchasing when next on sale!

Revitalize skin with 23% pure vitamin c and help fade acne’s scare and hyperpigmentation. Brighten skin complication .

Best set ever that I ever try I will recommend to everyone to look for Glow skin

Actually I bought it for a customer so I dun really know

I love this product, Enough to repurchase multiple times after being gifted. It is so good!

I repurchased this product after being gifted. Don't contemplate it! Get it. I love it so much

I repurchased it after being gifted. I never use Vitamin C but this product is just phenomenal!

COSRX Vitamin C serum has a slightly oily feel; not too thick, not too watery. It absorbs into my skin just as quickly as it is applied which is a huge bonus to me. I have previously used The Ordinary Ascorbic acid 8%+ Alpha Arbutin 2% which has a more oily texture and takes more time to absorb. I have a comparison right here if you’re curious. I noticed some tingling upon first application only. I have used this product every morning before my sunscreen since I have received it. I have noticed significant change in the overall brightness of my skin since incorporating this product into my routine. I loved the product so much that I already repurchased it.

The texture feels oily on your fingertips but not on your face. Magic. It works well with most of my sunscreen. I did get a lump under my jaw after the first use. Not sure if it was a bit strong for my skin, even though I don't feel any irritation. Will keep using it and see how it goes.

So far I haven’t seen any lightening of acne scars. It has oily feel to it but doesn’t feel sticky. Has a hot dog water smell

Product claim: to fade Acne scars, brightening, Improve uneven skin tone and provide healthy skin. Main ingredients: Vitamin C 23%. Experienced: I am using this for my AM Routine and followed by SPF. At first I was very worried about the vitamin C percentage because it was quite too high for me but not until I tried it out myself and I found myself loving this serum. It helps to even out my skin tone and yet it faded my acne scars. The texture of this serum is Golden watery and it absorbs very quickly into my skin. If you are looking for vitamin C serum, this one is a must to try. However, the few things that I don't like about this serum is that it dried out some areas of my skin (Cheeks, Forehead) and its smell. But not to worry because the smells will be gone within 15 seconds.

I am using this ampoule every morning. This makes my skin very smooth and absorbs very well. I will keep purchasing this.

Este serum es lo nuevo de COSRX con 23% de vitamina C además tiene glutation y vitamina E para potenciar el poder para combatir el melasma y las manchas

It reduces dullness in my skin and provide brighter complexion and it also helps lighten pigmentation caused by post acne marks.

It’s a good product to add to my skincare routine.

It’s a good product to add to my skincare routine.

I personally can't use this one, cause it has alcohol and I have eczema. No essential oils or fragrances. I'm told it works quickly. High concentration of Vitamin C. Doesn't sting.

it's just been 3 days since I started using it. the smell is awful but the product did not sting or irritate my skin even though I have sensitive skin. will update.

haven’t used yet but got it during $1 deal so can’t wait to try

I received my order recently and I look forward to use this product.

I’ve been keeping my opened bottle in the fridge and using it every other morning. So far, I’ve noticed lightening of my freckles (yay!) and brighter looking skin. It feels a little sticky drying on the skin, which is a bummer to me.

So good, really good, love it

excellent products the changes in skin with this serum have been incredible

I was given this as a gifted product, I tend to use Vitamin C at a much lower percent so this was too irritating for me I had to stop using it. I know the irrigation is because this Vitamin C is highly concentrated so I may go back to it once I’m ready to increase the concentration level

It’s one of my favorite product

it's a good product, it's a good product.

I love this serum. Use it for a two weeks and see first result. First of all my skin pigmentation is more bright. Texture is oily, but absorbed quickly.