At first, I thought it was a Vitamin C serum because of the packaging but it has a lot of key ingredients and it just contain Ascorbic Acid but not as the main ingredient. I guess I need to read the product details carefully next time. Anyways, I still like this serum. I haven’t been using it for that long and it’s my first bottle so hopefully it would really help with my dark pigmentation due to pimple scars.