Brand New Yves Saint Laurent Pure Shots Y Shape Serum What it is: A firming serum that targets loss of elasticity to help visibly lift, define and sculpt the contours of your face. What it does: Its formula combines barbary fig botanicals with powerful peptide technology to help instantly rejuvenate skin's firmness and define your facial features over time. The sensorial micro-emulsion deeply penetrates skin and activates the natural renewal process of your cells to leave skin plumper, more lifted and repaired.