Neostrata Skin Active Firming Collagen Booster Night Serum 30 mlSupplement your daily skin care and intensify your natural rejuvenating cycle of your skin. A healthy and stronger collagen inside the skin makes the skin firmer and more smooth. This unique formulation of SynerG Formula 6. 5 contains three clinically proven technologies, each with a specific action to maximize new and existing collagen. It contains Gardenia plant cell cultures to maintain the existing collagen structure by preventing the formation of