LOVE this! It works very well and feels so good on my skin. I've used it for several years and it shows. It's pricey but you only need a few drops every evening. When I tell people how old I am they never believe me. I like that!

I bought this after a friend suggested it and how I noticed how her face has really looked younger. I have been using it for 3 weeks and have already seen a difference. My husband even thought I got work done on my face. I love it and will continue to use this and very affordable.

Moisturizes your skin! I don’t even need a cream or moisturizer gel when I use this serum. Not only does it help make my face look and feel better with a youthful glow, I am also nourishing and protecting my skin. Have tried other vitamin c serums from the dermatologist office and Obagi is the very best.

I have seen the texture of my skin with the daily use of this vitamin C . I wish I could give this blue bottle more than 5 stars.,

After my dermatologist recommended that I use a vitamin C serum on a patch of damaged skin, as well as my face and neck. Knowing that if I didn’t see quick results I probably wouldn’t continue to use it, I decided to go with the 20% serum. I also incorporated a toner into my daily routine. Within 3 weeks, I saw healthier, brighter skin on my face and the lines on my neck faded a little. On the patch of damaged skin, I am seeing an improvement, although not as drastic. I used to get unsolicited comments on the extreme redness and I have not received those in a while. I’ve experienced tingling that a few other reviewers had mentioned, although not uncomfortable and not all over. Overall, I am very happy with my purchase.