This dual-phase, anti-aging serum from Dermalogica, helps protect skin from external lifestyle factors, such as stress, sun damage, pollution, and poor sleep, and reactivates how younger skin cells act through powerful antioxidants and technology. Preserves, restores and reawakens the nature of younger-looking skin. Dual-phase serum protects skin from external lifestyle factors, such as stress, UVA/UVB rays, poor sleep, pollution and reactivates how younger skin cells act. In the firming phase, collagen cells are activated to turn over more quickly to increase firmness, while peptides help rebuild and repair after external damage.