COSRXThe Vitamin C 23 Serum 20ml

One of the best Vitamin C i have used so far. Even though it has weird smell but its so good on the skin. Just amazing

I absolutely love the product

I couldnt use this product at all, it has a horribe smell... It smelss like a rotten hotdog, made me puke...I understand this is the purest form of Vitamin C and may work if i had used it, but its a no no for me. I cant withstand the smellOn potency, i cant review because i only used once but i guess it should work since its in a pure form.

Guys, please be aware!I bought item and after delivery threw box and decided to use later. And now cannot return.But Oh my goodness, the smell is absolutely disgusting. It smells with old eggs.Please do not buy if you re sensitive person

My skin love this vit.C and with the low price tag it's a win!

The high concentration scared me especially since this is my first time using vitamin C but it did not irritate my skin at all. It’s been almost 2 weeks and I can already see my acne scars have faded 55% of the way! It’s really good to use in the daytime as it prevents skin pollution too, pretty hydrating as well as my dry-combo skin has no problem with it.

Really a good productBut scent is lil bit disgusting

I like it and I have seen results with it quite fast.I liked that it is 23% pure vitamin C (ascorbic acid) and also has niacinamide, hyaluronic acid, and vitamin E. Quite a potent serum and covers all the grounds for you. One thing I didn't like about it is that it oxidizes rather quickly so it is better to keep it in the fridge so it lasts longer.If it is your first time using vitamin C serums then this concentration could be slightly irritating for you.