It doesn’t burn or sting my skin as vit c , I’ve used 2 , I like it so far

I used this with numbuzin 5 and the pair really well. After a few uses I noticed a lot change but now not so much so I’d say it works pretty slow

اذكروا الله

Great vit c. It does have a higher level of vit c, so if your skin can handle it - it works wonders! They've really improved on the smell as well.

[TMRM] this vita C works really good for reducing hyperpigmentation. I have finish the whole bottle before it turned anymore yellow. The only thing is that this vita C does leave behind a sticky residue if you use a bit to much and yes it smells like hotdog water since its a pure ascorbic acid.

This helps me so much in brightening my skin ! love it

i love the product because it's concentrated Vitamin C which u can't find it in other stores .. it's written that u have to keep it between 3-10 degrees in fridge

I like this serum I feel it brightened my skin. The texture is very light doesn’t leave the skin oily. Highly recommend it.

This serum definitely provides glow and brightning however my old dark spots have still not faded and this serum is so so so so sticky, I heard a lot of people hate the smell but honestly for me it smells like nothing

To be completely honest I used probably for one or two weeks max and I noticed pimples but not much and I dropped it and it spill so I didn't use it

I love this serum so much. I have finished this about 3 or 4 already. It helps me a lot on my uneven skin the most. The only problem is you need to keep it in the refrigerator all the time after opening or it goes bad.

I love all the product from Stylekorean. They provide only the authentic products to customers. I can say Stylekorean is the most trustful website for everyone who is interested in Korean cosmetics. I love all the product from Stylekorean. They provide only the authentic products to customers. I can say Stylekorean is the most trustful website for everyone who is interested in Korean cosmetics.

Beautiful serum, vitamin C, reduces pigmentation significantly. It is used in the morning. It gives alkalinity to the skin and is gentle on the skin. My skin type is combination and does not break out pimples

Haven't tried yet. Bought for fun. Haven't tried yet. Bought for fun. Haven't tried yet. Bought for fun.

I feel like this serum makes my skin tone even, giving me look younger.

My forever Vitamin C to erase my acne marks

Haven’t tried yet looks good need points

I like this vitamin C serum, I keep it in the fridge for best results. Skin looks brighter and more even after consistent use. Would recommend.

i like this product so much!!!!!!!!!

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super good for acne and pimples!!!

I really like this serum but it oxidizes quickly. Keep refrigerated. I really helped to smoothen my skin texture.

I really like this product and I will buy it agin its help me with the pigmentation

This is so good for my skin… it has plumped my skin and it’s glowing.

The Vitamin C 23 Serum has become a staple in my skincare routine. Its lightweight texture absorbs quickly, leaving my skin feeling refreshed and rejuvenated. With consistent use, I’ve noticed a visible reduction in dark spots and an overall improvement in my skin’s brightness. This serum has a potent yet gentle formula that didn’t cause any irritation, making it suitable for daily use. The packaging design with the dropper is convenient and helps in controlling the amount used. If you’re after a reliable Vitamin C serum that delivers noticeable results, this one is definitely worth trying!

The Vitamin C 23 serum Super Vitamin E + Hyaluronic Acid This product is the most hydrating, it is an ideal facial serum for illuminating and it is hydrating for fine lines, it improves uneven skin tone and helps with dull skin, leaving you with shiny and beautiful skin

I actually really love this Vitamin C serum from Cosrx. It goes on very gently, not too sticky or oily. It allowed me to fade away a blemish mark from a pimple breakout I had on my chin in a week, that is how potent and pure this serum is. This serum packs a high dose of targeted vitamin C to the skin for great targeted effect. The way this product is delivered is excellent, it comes in an amber vial which prevents the product from oxidizing and the built in dropper allows you to precisely apply a tiny amount (which is all you need). Excellent product overall. I will say you do need to moisturize and wear sunscreen when using this product and with Vitamin C in general to reduce irritation. You cannot use it though at the same time as the Cosrx Peptide Serum, so you would use it at different times of the day. Love the overall effect though, it does reduce hyperpigmentation and brightens skin for a beautiful glass skin effect.

Reduce post hyperpigmentation, renew skin and improve the look of fine lines and wirnkles. Of light texture it is moist and makes my skin feel soft, hydrated Not sticky tacky or heavy, fragrance free 

COSRX's Vitamin C 23 Serum has become a skincare staple for me. Its stable formulation ensures potency, effectively brightening and evening out my skin tone. The lightweight consistency allows for easy layering with other products, making it versatile in my routine. Over time, dark spots and hyperpigmentation have visibly reduced. The serum's thoughtful design preserves the integrity of the vitamin C, ensuring optimal results. If you're seeking a reliable and effective Vitamin C serum, COSRX has crafted a winner with this product. A radiant complexion awaits.

Its high concentration of Vitamin C helps brighten and even out the skin tone, promoting a radiant complexion. It fades acne scars & hyperpigmentation, diminishes fine lines and wrinkles, and fights the signs of aging. The serum has a liquid, oily texture, but it effortlessly absorbs into my skin, leaving it soft and smooth. I love using this in my PM routine. And it's necessary to remember to use sunscreen when incorporating this product into your skincare routine.