I am a beginner with vitamin C, so I can't really compare this to any other vitamin C serum, but this product seems pretty great. Although I did sometimes feel a slight tingle when applying, I never got any irritation from this. It also didn't cause any breakouts, and with my acne-prone skin that is saying something. I would give it 5 stars but I don't think I have used it often/regularly enough to judge its long-term benefits.

I haven’t seen result yet.

This vitamin C is the BOMB, particularly when paired with alpha arbutin. After recently introducing this into my routine (stepping up from the Klairs freshly juiced vitamin C), I have noticed my PIH has started to fade even faster. I am Indian and Chinese with light skin and sadly, any small blemish can leave me with varying degrees of PIH (although luckily, blemishes are few and far between but I think that's what bugs me even more when they appear!) so I appreciate that I am able to reap the benefits of its antioxidant properties in addition to its ability to lighten dark marks. No breakouts or bad reactions from this product and I have dry sensitive skin. Be very careful with this formulation and make sure that it is kept in its box in the fridge as it does oxidize quite a bit faster than other vitamin C serums I have used. In fact, mine arrived slightly oxidized because it was at the post office for a few days :( still a great product and I will repurchase.

I have been using this for about 2 months and my skin has changed, pigmentation is lightening and my skin feels nourished.

I don't see any big changes when I use it but I like it. It doesn't break me out like a lot of other vit C products and absorbs into your skin quite nicely. The packaging is also dark so it prevents UV lights from penetrating it and affecting the vit C.