ARE THERE ANY STUDIES TO SUPPORT THIS RESEARCH?
Over the last few years pioneering research work has been ongoing at the Department of Dermatology of the University of Pennsylvania using biomarkers to determine the UVA protective values of various UVA filters. In vivo studies on human skin have confirmed the benefits of the combination of the Broad Spectrum UVA filter, Parsol 1789 and other UVB filters in providing optimal protection from repetitive exposure to UV light.

The studies were conducted by Kays Kaidbey, MD Adjunct Professor of Dermatology at the University of Pennsylvania. The following changes were measured: Epidermal Thickening (associated with UVB damage), Sun Burn Cells, p53 Mutations (marker of epidermal DNA damage, Special Enzyme Deposition (the enzyme lysozyme indicates damage to skin's elastin fibers, and Dermal Inflation (indicates damage to the deeper layers of the dermis).