The Therapeutic Sunblock SPF-40 combines the newest nano-technology and bio-technology to deliver unparalleled UVA and UVB protection. The advanced formula contains a pharmaceutical grade sequence of the clinically-proven wrinkle fighting peptide, Argireline® and the world's most powerful antioxidant, A-Lipoic Acid. This is a highly-concentrated formula, use sparingly as directed. Each flexible plastic tube is 60 ml, enough for many days in the direct sunlight.