Enriched with detoxifying, restoring & oxygenating active ingredients, this serum offers a triple solution to your skin: it helps repair its barrier function, eliminates toxins & boosts radiance. It is able to breathe again & regains all its freshness & vitality. How to Use: Apply in the morning & evening before the Oxygen 3 Defense Cream or the Oxygen 3 Defense Fluid SPF15. Use as a 1 month intensive treatment, & to renew with each season change.