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Determination of the In Vitro SPF
A ring test at six European test centers showed that SPF evaluations with good reproducibility and comparability could be obtained by an in vitro protocol measuring either transmittance or erythema-effective irradiance of product samples applied on PMMA plates.
Jun 24th, 2009
Quantifying Benzophenone-3 and Octyl Methoxycinnamate in Sunscreen Emulsions
The authors have validated a high performance liquid chromatographic (HPLC) method for the quantitative determination of benzophenone- 3 and octyl methoxycinnamate present in sunscreen emulsions.
Feb 17th, 2009
Quantifying Sunscreens and Preservatives in Cosmetic Products
The authors propose and validate an HPLC method for simultaneous quantitation of commonly used commercial sunscreen actives and preservatives in cosmetic emulsions.
Feb 16th, 2009
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ISPE Presents Complete Immersion SPF Testing
ISPE Laboratories presents a new method to evaluate the solar protection factor of water-resistant products.
Nov 5th, 2008
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In Vitro and In Vivo Offered for Sunscreen Testing
Laboratoire Dermscan and HelioScreen Labs are combining their skills to offer a complete new in vitro / in vivo service in the field of sunscreen testing.
Oct 31st, 2008
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FDA Reviews Sunscreen Active
The Food and Drug Administration(FDA) has requested safety and efficacy data for the sunscreen active ingredient diethylhexyl butamido triazone in concentrations...
Oct 29th, 2008
Analytical Device Raises the Bar on UVA-PF
A new UV transmittance analyzer has been designed to exceed Colipa's UVA protection factor (UVA-PF) requirements to support the development of higher protection factor sunscreens.
Oct 22nd, 2008
Research Pathways to Photostable Sunscreens
This article provides a visual depiction of pathways that UV filters undergo when exposed to solar radiation; such pathways often lead to photo-instability. A fluorescence technique is described that has led the author to identify compounds that preserve photostability in a novel manner­— by quenching the UV filter’s singlet excited state.
Oct 21st, 2008
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