Excellent product that really works. Unlike Skinceuticals Metacell B3 Renewal (which contains 5% niacinamide, a peptide, and orange oil which is potentially sensitising) this is full of more beneficial ingredients in a similar feeling formula. You get green tea, mulberry, a peptide and plankton. More benefit. Better product.

I alternately use the B3 Brightening Serum - alternating with C&E advanced. Additionally, I'll use this occasionally at night if I'm cycling off the retinol. The PCA products are by far the best I've used in terms of dealing with my melasma. I've been using the products since March and have had unsolicited comments about how great my skin looks!

I've definitely noticed an improvement in my skin over the past 10 days that I've been using this product. My dark spots appear much lighter and my skin tone is much more even, and looks brighter. This is very gentle serum. I haven't noticed any irritation or any increase in blemishes. The bottle is easy to use and the serum is also hydrating and makes my skin softer. I use it after my shower to really get it into pores. It doesn't leave my skin feeling sticky or oily, and it works under makeup.

This goes on so smoothly on my skin and since using my face feels clear and looks bright! I do it in the morning before moisturizer and makeup. Doesn't have any funky smells, doesn't pill, excited to keep using this and see my skin improve. Only note is that I wish the bottle showed how much you have left to help with when to reorder.

I bought this on September 5 and started using it the next day. I can tell that it is working. I just don't like the container. I don't know if the pump is broken or it's empty. I'm not sure how long does this bottle last if you follow the directions, which I did. Looks like there is no easy way to open the container to see if it's empty. Kind of pricey to only last less 45 days.