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

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.

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!

Decent but I still prefer the Ordinary Vit C…

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.

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!

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.

13% KEPT A HALF CUT APPLE FRESH AS LONG AS THE 23% DID, PLUS IT WAS FAR GENTLER ON THE SKIN.GUESSING THE 23% WOULD BE BETTER FOR HELPING MEDICATE A PESKY SKIN PROBLEM.

Very good 👍