Cosmetic Skin Solutions Supreme Serum 20 Anti-Aging Formula with 20% Vitamin C, 0.5% Ferulic Acid and Hyaluronic Acid (2 oz)

I love this product so much that I transitioned to the larger size. For the last year it has been part of my regular routine. The reviews on the smaller size bottle are more extensive because it seems like more people purchased that size. But, any negative reviews are either people who maybe don't understand how it's supposed to work or I think may have mishandled it. You need to keep the vitamin C in the dark. It does oxidize in light. I keep it in my box that it comes in. a little oxidation does not mean that the product is rancid. It should start out clear and it will end up yelling. If you try to keep this bottle around for a year it is going to oxidize too much. If you're using it everyday as described you're not going to have a problem. It can turn your hands a little orange if you have quite a bit of dead skin on your palms. If the skin on your palms is well exfoliated it's not a problem. It is a little bit sharp if you put it on immediately after washing your face if you wait about 5 or 10 minutes after washing and toning it's no problem at all. I use this in conjunction with their B and hyaluronic acid serum.

I was expecting a more vibrant complexion but its just not doing the job,but I will keep just for anti-aging benefits

This is truly a miracle! I went to a plastic surgeon who did some work on me,but it was not on my face I was too afraid to do a facelift, so they gave me a small sample of this, and I was amazed! The sample lasted me 2 months and I went back in to their office to order a bottle and the price they gave was ridiculous so I came on Amazon and got "three bottles" for the price they wanted for one bottle that was smaller than the three I received it does wonders it removes age spots, lines, wrinkles, and it produces collagen back into your face that you lose over the years this is a must-have! I am 49 years old I don't give it five stars I give it 10.

I ordered the 1 ounce size of this serum in January 2018. The consistency was heavy similar to an oil. When I received a 2 Ounce bottle a few days ago it had a consistency similar to water. I am confused as to why there would be a difference in consistency. Should the consistency be like oil or water?

This is very drying. I've used other vitamin C serums (Obagi) which didn't cause any problems. This stung and after about 10 days made my face very dry with some peeling. I think it would be okay for someone with oily skin, but my skin is normal and it's way too drying.

Very good C serum. I have tried several other more expensive brands, but this one works the best. Wish they would come out with a stronger C %.

Seems to work as described but I haven't noticed a big improvement in skin after 3 weeks.

I love this product. I have been using it for about 8 months and my skin looks much better. The tone of my skin is much more even and fine lines are diminished. I use it under a moisturizer with sunscreeen during the day. At night I use a retinol product. I'm very happy with the results. This product lasts a long time as it is only necessary to use a small amount each day. I would recommend this to anyone with sun damage/age related skin issues.