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 out It sat well under makeup It didn't have a smell Overall: 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)

Im in my 30s, oily skin and do love loads of Biossance products but this one doesn’t seem to be working for me. I have some (very little) hyperpigmentation and decided to try this serum as I do enjoy other products form the brand. It’s lightweight and milky colour, no smell that I can detect, sinks in very well and is not sticky. However, having finished this serum, I simply to do see any difference and if anything some smaller patches of darker skin have gone worse. I will be going back to my Sunday Riley Vit C or Medik8 as these have truly worked extremely well for me. 

Have gone through many vitamin C products due to having quite sensitive skin, especially towards vitamin C, but this... WOW! Not only is this super lightweight, so can be worn under skincare layers, makeup, SPF (you name it), but this really is effective. Have had some aggressive breakouts lately, that has left me with new blemish scars, even after a few uses of this, I can 100% see a lightning effect on the scars. The overall texture and plumpness of my skin are also looking really healthy! Definitely recommend and repurchase!

This product works for me. I have a combination, Asian medium to dark skin tone and when I get pimples, they are massive and leave seriously dark spots. After finishing a bottle, I cant barely see where the spots used to be. Also, it is lightweight which I really like especially on humid summer days. It is not tacky and absorbs well on the skin. I recommend it.

I’m in my mid-20s and have dry/dull sensitive skin. This product is so hydrating and comfortable to wear. My skin looks noticeably brighter and has been glowing after a few weeks with the lightening of a few dark spots. I wear this in the morning under my Biossance moisturiser with SPF on top. Really been enjoying this. I’ve tried a lot of vitamin C serums (including Drunk Elephant, Paula’s Choice, Kora Organics, Honest Beauty) and this is my favourite one!