Critical Wavelength Method Should Face In Vitro Comparator, P&G Says
This article was originally published in The Tan Sheet
Executive Summary
The critical wavelength method of determining a sunscreen's percentage of UVA absorption should be compared to an in vitro SPF, not an in vivo SPF, Procter & Gamble says in a Nov. 10 letter to FDA.
You may also be interested in...
L'Oreal Critical Wavelength Criticism Disputed By P&G
L'Oreal used a "flawed technical analysis" in assessing the critical wavelength method as a UVA sunscreen testing assay, Procter & Gamble asserts in May 2 comments to FDA.
L'Oreal Critical Wavelength Criticism Disputed By P&G
L'Oreal used a "flawed technical analysis" in assessing the critical wavelength method as a UVA sunscreen testing assay, Procter & Gamble asserts in May 2 comments to FDA.
L'Oreal Critical Wavelength Criticism Disputed By P&G
L'Oreal used a "flawed technical analysis" in assessing the critical wavelength method as a UVA sunscreen testing assay, Procter & Gamble asserts in May 2 comments to FDA.