This serum is the best I've ever used. I used this in conjunction with the Peptides. Last weekend I attended my 30-year high school reunion and I had so many compliments on my skin. A classmate's husband even said he couldn't believe I was class of 79 because my skin was so smooth and wrinkle free. Seriously, my skin looks to be about 30 and I think the combination of these products and healthy eating (lots of protein)are major contributors.