ZO Skin Health GROWTH FACTOR SERUM by ZEIN OBAGI MD 30ml/ 1 Fl. Oz, Exp:10/2025 Authentic, New Lightweight gel for all skin types that helps minimizes the appearance of expression lines + wrinkles. Named one of the 13 Best Anti-Aging Serums with Growth Factors - Cosmopolitan 30 mL / 1 Fl. Oz. BENEFITS Formulated with a combination of plant and enzymatically derived growth factors, clinically proven to: Improve overall appearance of skin Reduce appearance of fine lines and wrinkles Restore hydration and reinforce the skin's protective barrier 93% of patients experienced improvements in fine lines and wrinkles, firmness and elasticity + texture and smoothness, after 12 weeks of using Growth Factor Serum.