The power of peptides for visibly firmer and brighter skin. | Experience the effects of peptides yourself and don't give up on the dream of a youthful appearance. The lifting serum StriVectin Tighten & Lift Peptight Tightening & Brightening Face Serum harnesses the power of two types of peptides, patented NIA-114 and potent botanical extracts, for visibly firmer, brighter skin.