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Rafaela N
Rafaela N
Portugal
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Research Article
Determination Of Sun Protection Factor By Uv-Vis Spectrophotometry
Author(s): Paula Ana Fonesca and Rafaela NPaula Ana Fonesca and Rafaela N
Background: Sunscreen products contain active ingredients that can absorb, reflect or scatter the sunlight, depending on their nature. We can evaluate the effectiveness of a sunscreen by determining the sun protection factor (SPF). This SPF should be specific for each phototype, so as to the protection against the damaging effects of UV rays may be the best. Besides the choice of the adequate sunscreen, care must be taken with the application method and the amount of product that is applied. In most cases, the real SPF did not correspond to the labeled SPF. Aim: The aim of this study was to determine the real SPF values of ten chemical or physical sunscreens through UV-Visible Spectroscopy, as well as the degradation by direct solar radiation and temperature at 37°C. Methods: UV-Vis spectrophotometry was used to meas.. View More»
DOI: 10.4172/hccr.1000108