I decided to buy this product line and the Amp MD roller because I saw a friend's a skin improve dramatically. I am not quite 40 and I have a lot of wrinkles around my eyes. This product is expensive but it works! After a few days I noticed my skin was smoother, softer looking. Even my husband noticed. I use this serum after I use the mask and toner & the roller. It isn't oily or too creamy, it just absorbs well. It's nice that its in a small capsule so I don't use too much. At first I thought it might not be enough to cover my whole face but it was. It's been about 3 weeks as and I can see my wrinkles have decreased about 50% and my skin is great! I am so happy I finally found something the truly works on wrinkles. The down side is, again, that it's expensive to buy the product line, however they do have a 60 day money back guarantee, even if you return everything empty. I also used Proactiv, one of Rodan and Fields other lines, when I was a teen and it was the only thing cleared my skin, so really, I'm not surprised that Redefine works so well.