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UVA critical wavelength method inadequate to predict potential UVA absorption -- L'Oreal.

This article was originally published in The Tan Sheet

Executive Summary

CRITICAL WAVELENGTH TEST INADEQUATE TO DETERMINE UVA EFFICACY, L'OREAL maintains in May 15 comments to FDA on the OTC sunscreen tentative final monograph. Following a study evaluation of the proposed in vitro critical wavelength testing method, L'Oreal says it found the test "does not provide a quantitative measure of the UVA protection afforded" by an OTC sunscreen. "Since this method does not account for any biological response, it cannot adequately predict a product's protection against UVA effects on the skin," the company asserts. L'Oreal is working on an alternative testing method to measure UVA protection in sunscreens.

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