Resumen de A Simple Preparative Method to Evaluate Total UV Protection by Commercial Sunscreens

Shouei Fujishige, Sumiko Takizawa, Kaoru Tsuzuki

• The optical transparency of a cellulose membrane in the UV region is equivalent to that of a high-quality quartz plate. A simple preparative method to obtain UV absorption spectra of sunscreens over two length regions, UVB and UVA, is presented with some experimental results obtained using a Visking tubular membrane. The thickness of the optical path can be controlled by simple squeezing at the surface of the membrane holding the creamy sample in the tubular space on a flat plate.