11.18.22
Effective without irritation
Great formulation - it’s a high percentage vit C but didn’t cause me any irritation like most Vit c serums do. It’s like a dry oil serum and sinks into the skin easily. Great at evening our skin tone and brightens skin

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11.18.22
Good
Very very very very Very very very very Very very very very Very very very very Very very very very good
11.13.22
Effective and no irritation
Really good Vit C product - it’s an oily serum but applies and absorbs into the skin quickly. A little goes a long way and found this brightened and evened out skin tone after a week or two of consistent morning use in the morning. I thought the high percentage of Vit C may cause irritation, but it was really gentle and overall a great product from cosRx. I have purchased again.

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11.09.22
Great vitamin C
I use this in the morning. I notice my face was brighter after a couple of use.
11.09.22
Vitamin C Serum
So I'm on my second bottle. It's 20 ml, so it's not a lot of product but my first bottle lasted me over 2 1/2 months. It's not greasy at all. It spreads across the face really well. I also didn't find this to be harsh at all. My skin does appear to be a little brighter. Hopefully with more consistency I'll continue to see better results.