I can only use this every other day or I get breakouts but it definitely gives me a really lovely glow using it this way.

i was pleasantly surprised .nice formulation with no the common vit c smell.i liked that it was a milky very hydrating serum .also i noticed that it help with my skin a lot looking more radiant and with even complexion after 3 weeks

It's a nice serum but it won't give you drastic results. Again, that's a fine way to formulate a product, but it's probably more suited towards skin care beginners. I hope for and expect a bit more so I'm not sure how suitable I am to review this product. It didn't do much for me but it also didn't do anything wrong. It's fine.

Nice texture, absorbs well into the skin, no irritation, no redness. I have started to use it during my vacation and I managed to get away without sun pigmentations or extra dark spots. Sit well under SPF and makeup.

Negatives:I used this for 10 days straight every morning under SPF and it didn't give me that glow I'm used to getting when I use a good vitamin c serum. Positives It didn't break me outIt sat well under makeupIt didn't have a smellOverall:I don't think it was worth it.

Helps with my acne haven’t broken my skin out I kinda see that my acne scars are a bit lighter 

I am yet to try a product from Biossance that I haven't fallen in love with. As someone with super reactive skin, I can trust that these gentle formulas will work for me. I always want to use vitamin C in my routine but find that it is one of those ingredients that can be a bit too much for my skin so I am constantly looking for gentle but effective formulas. Enter Biossance Squalane and Vitamin C Dark Spot Serum which is lightweight, feels calming and hydrates my skin. I've been using this consistently every morning for the last month and I am seeing an improvement in some of my post-inflammatory hyperpigmentation marks already so I'm sure I will repurchase it when I finish the bottle.

I bought this when I got a flare up of hormonal cystic acne on my entire neck whilst pregnancy hormones were running rampant through my body. I believe this has had a positive impact on the hyperpigmentation caused by this type of acne and now the hormones have gone and the spots have cleared the marks are fading more and more with continued use. I would say it is pricey for the amount of product you get. I used 1-1.5 pumps twice a day after washing my face, so it doesn’t last the longest. But I’d pay anything to have something help me with these marks! Can’t say I’ve noticed any difference in general to any other skin tone though, so unless you’ve got something like I’ve experienced not so sure it would do much for you. 

So I tried a sample of this earlier and didn't notice any kind of reaction. I bought the full size. I recently pared down my skincare routine to minimize reactions as I found out I have sensitive skin. The first time I used the full size, I got redness and inflammation. Which is really weird - why did the sample not affect me as much? Also, this is 10% vitamin C, but I have used higher concentration serums (primarily Vichy's 15% Vitamin C serum) with no irritation whatsoever. I think its a shame because the ingredients list sounds amazing but there is definitely something irritating here.

Nice texture, not tacky and sinks into skin easily, sitting well under makeup and spf. However I didn't see any brightening effect like with other vit C products or any lightening of dark spots /pigmentation. (I have pale fair skin)