COSRXPure 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

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!

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.

Keep my skin healthy

My face lightened especially my dark spots.

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.

Heard a popping sound when i opened it - there must have been a build up of pressure in the bottle - not sure if this is normal or not? The smell is foul - like urine and stale coffee. I’d intended to at least finish the bottle but I ended up throwing it away after a bout 2 weeks of using on and off. Waste of nearly £20! The smell was so vile it didn’t feel right putting it in my face. I like cosrx stuff, but not this. I’d use a different branded vitamin c serum next time. Do not 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.