Perfected in Kate's Clinic, this specially formulated highly active concentrate to transforms dull, sagging skin into visibly firmer, smoother, refreshed-looking skin. A high-performance serum clinically proven to diminish fine lines & wrinkles while tightening skin. Lightweight and packed with powerful peptides, this clinical grade serum works quickly and over time to increase firmness and elasticity, diminish fine lines and wrinkles and help improve the skin barrier. Clinically tested safe for sensitive skin.