it’s so good I like it it’s so good I like it it’s so good I like it it’s so good I like it it’s so good I like it it’s so good I like it it’s so good I like it it’s so good I like it

I liked the product didn’t feel much change on my skin but it was ok

High recommend.the best product.suitable with acne skin.

This is a great vit c. I generally use this after I get too lazy and don't end up doing a skin routine for a few days. After 1 nights use my skin is back to life. Only down side is the smell but it works too well not to use it.

Nothing to say. did no different

I reallly love and enjoyyy using it

Enjoy using this product love it, definitely will repurchase

best vit c serum wish it was more than 20ml though

Clean ingredients and works very well

You definitely have to store this in the fridge or use it quickly, its state definitely changes if not, but it was nice, it was slightly hydrating and brightening on impact

I heard good thing about this vitamin C and I really want to like it but it broke out my face

Although this is the best vitamin c I’ve tried so far (I’ve only tried two), there’s certainly better options out there. To start, after applying it feels really sticky/tacky. Doesn’t work well under makeup from my experience. There’s also a slight fishy smell that goes away but still, there’s better options.

I love this product, my skin looks better I recommend it, the ingredients are friendly to the skin. I am happy with this product. I love time deal. All products are 100% authentic.

This is great and haven't caused any reaction. It makes my skin look smoother and not dehydrated!

I love love love love

So Good, Really Good, Love ittt

Not recommend for this product. Rushed my skin

Zero irritation, no break outs or inflammation. Some Vitamin C serums can be counter productive to sensitive and acne prone. Do research as I did. This product works well and doesn’t cause the inflammation that many others have.

good product to try. love its smell and texture.

As someone with sensitive skin, it is very difficult for me to try many vit c in the market plus i kinda afraid of it but maybe they are pricey so if it doesnt works for me, it will be a waste right and i dont like to waste my skincare product they r so precious to me even when they do harm to my skin lol. The moment stylekorean put on this product for 1 dollar only, i immediately grab 3 of them!! Anddd i have never regret it. I'm already on the second bottle and i love them cause they never irritate my skin, my skin never feels tingle since they also contains vit e. To conclude, never afraid to try this cosrx vit c since they r so gentle . The only downside is the opening date only lasted for 2 months but i think it worth for 20ml hehe

This serum is the best serum ever ! I was never disapointed with CosrX, the product give me a nice healthy clean glow. I have less breakout.

I highly recommend this product! Loving it!

I highly recommend this product! Loving it!

bought it for my brother. he quite like the vit C serum. no strong reaction so so far so good

I am in love with this vitamin serum! I have tried other vitamin C or brightening serums from several other brands but never saw much difference. I am on my 5th bottle of the cosrx one and I love it. I do see my dark spots fading. For deeper scars or pigmentation that's been around for year, it doesn't get rid of them as easily. The color is a bit more yellow than other vitamin C serums but it is a higher percentage. The smell isn't too strong.

Personally I didn’t notice a difference but I also don’t have that much hyperpigmentation. Expires in 2 months

Sticky, I have put this in the fridge as I read previous review. It is easy to go off. No reaction, great product

Was looking for reasonable alternative to expensive vitamin c serum

You can always rely on the quality and long lasting effects of COSRX Products