Perricone MD delivers its most advanced skincare innovation to date with the Growth Factor Firming & Lifting Serum. A powerful pick-me-up in a little bottle, it contains the highest level of polyamine growth factor available, promoting the look of youthful, collagen-rich skin that is visibly firmer. Joined by the highest concentrations of pure retinol and eggshell membrane, rest assured in the science behind this rejuvenating formula.