Antioxidants are critical for blocking free radical damage to your skin.
What does that mean?
They stop things like UV rays, pollution and blue light from breaking down your skin's collagen. This particular serum is a favorite for its lightweight lotion-y texture, its high concentration of Vitamin C, and its ability to be appropriate for all skin types (even sensitive skin and acne/rosacea-prone skin.)
This one is a home run for nearly everyone.