The FDA proposed solar simulator versus sunlight

The FDA proposed solar simulator versus sunlight The US Food and Drug Administration is in the process of formulating final rules for sunscreen labeling and testing. They have adopted a version of the solar simulator standard proposed by COLIPA, a European cosmetic products trade association. From our files we have selected spectral data on several solar simulators that comply with the proposed rules and have compared these sources both one to another and to several standard solar spectra of Air Mass 1.0, 1.5, and 2.0. In doing so we have used additional spectral analysis procedures including examining the goodness of fit between each solar simulator spectrum and an Air Mass 1.0 (0° zenith angle) solar spectrum. The index of goodness of fit ranges from ∼78% to just over 90% compared to solar spectra representing other Air Masses of 1.5 and 2.0, the goodness of fit is lower. Unfortunately, one may not assume that complying with a standard assures that other solar simulators also complying will produce identical results. In fact, by our analysis, none of the solar simulators we examined would be expected to produce the same SPF as sunlight. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Photochemical & Photobiological Sciences Royal Society of Chemistry

The FDA proposed solar simulator versus sunlight

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Publisher
Royal Society of Chemistry
Copyright
This journal is © The Royal Society of Chemistry and Owner Societies
ISSN
1474-905X
eISSN
1474-9092
D.O.I.
10.1039/b9pp00148d
Publisher site
See Article on Publisher Site

Abstract

The US Food and Drug Administration is in the process of formulating final rules for sunscreen labeling and testing. They have adopted a version of the solar simulator standard proposed by COLIPA, a European cosmetic products trade association. From our files we have selected spectral data on several solar simulators that comply with the proposed rules and have compared these sources both one to another and to several standard solar spectra of Air Mass 1.0, 1.5, and 2.0. In doing so we have used additional spectral analysis procedures including examining the goodness of fit between each solar simulator spectrum and an Air Mass 1.0 (0° zenith angle) solar spectrum. The index of goodness of fit ranges from ∼78% to just over 90% compared to solar spectra representing other Air Masses of 1.5 and 2.0, the goodness of fit is lower. Unfortunately, one may not assume that complying with a standard assures that other solar simulators also complying will produce identical results. In fact, by our analysis, none of the solar simulators we examined would be expected to produce the same SPF as sunlight.

Journal

Photochemical & Photobiological SciencesRoyal Society of Chemistry

Published: Mar 1, 2010

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