neck fit contour serum 50ml This firming serum is a skin care workout for your neck and décolleté. Rye Seed Extract works with a novel Palmitoyl Tripeptide-42 and Rambutan Extract to deliver Retinol-like results, visibly smoothing, firming and toning skin. Flex Lift Contour Technology provides a visible lifting and tightening effect, smoothes fine lines and helps protect skin against pollution, which can lead to premature signs of skin aging.