Enriched with an active, plant-based complex of Cladosporium, Echium, and Sunflower, Dr. Barbara Sturms CALMING SERUM rebalances irritated skin and helps to reduce rednessand burning. Perfect for soothing your complexion after sun exposure, sleep loss, jet lag, air conditioning or environmental pollution. When used over time this serum strengthens the skins natural defenses minimizing the skins sensitized reaction.