Fight premature graying with Defy Gray Hair Serum—an advanced, lightweight formula that helps reverse grays, restore natural color, and nourish your scalp. Perfect for daily use. Fight premature graying with Defy Gray Hair Serum—an advanced, lightweight formula that helps reverse grays, restore natural color, and nourish your scalp. Perfect for daily use. Fight premature graying with Defy Gray Hair Serum—an advanced, lightweight formula that helps reverse grays, restore natural color, and nourish your scalp. Perfect for daily use. Fight premature graying with Defy Gray Hair Serum—an advanced, lightweight formula that helps reverse grays, restore natural color, and nourish your scalp. Perfect for daily use. Fight premature graying with Defy Gray Hair Serum—an advanced, lightweight formula that helps reverse grays, restore natural color, and nourish your scalp. Perfect for daily use.