A-derma Protect Invisible Fluid SPF50+ is a thin liquid facial sunscreen that provides high SPF50+ protection in 3 levels: Protects, with the patented PFDC photoprotection system Strengthens the skin barrier and Ensures cellular defenses, with the patented Barriestolide complex, derived from Rhealba Young Oat Germ Oil Properties It offers an excellent texture that is absorbed and dries within 3 seconds of its application.