Every day, environmental aggressors like air pollution, pesticides, and tobacco smoke attack the skin and generate free radicals-unstable molecules that steal electrons from your skin's healthy molecules. These stressed skin molecules can't do their job-they're tired and weak, leading to oxidative damage which manifests visually as dullness, dryness, wrinkles, and dark spots.

Obagi Clinical Environmental Defense Serum uses an antioxidant-rich blend to neutralize these free radicals, and adenosine triphosphate (ATP) to recharge your skin for a better barrier defense from the early signs of skin aging, in addition to a rejuvenating and energizing effect leaving skin glowing and hydrated.

Obagi Clinical's Environmental Defense Serum equips your skin to fight oxidative damage from environmental aggressors with two key technologies:

Neutralize: Environmental Defense Serum's rich blend of Cordyceps, Astragalus and Wild Yam Root Extracts + Haberlea Rhodopensis Leaf Extract has antioxidant properties-meaning it donates electrons to free radicals, stabilizing them and stopping them from stealing your skin's electrons. It's the layer of defense from environmental aggressors your skin needs.

Recharge: ATP is the skin's natural source of energy, a powerhouse molecule that keeps our skin energized and healthy (and thus refreshed & glowing). Unfortunately, ATP does not naturally replenish, so as we age our skin grows tired and damaged. Enter the ATP Complex featured in Obagi Clinical Environmental Defense Serum. It helps restores the skin's energy to give it the fuel it needs to fight oxidative damage while simultaneously assisting with hydration, skin radiance, and wrinkle reduction.

The Serum: An incredibly soft, non-sticky, easy gliding serum leaving skin with a radiant finish.

The Scent: A green and floral scent, releasing tea top notes with heliotrope, lily of the valley, and rose middle notes, leaving a light musky end note.