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New in UV Filter (page 6 of 12)
Oct 20, 2010 | 08:45 AM CDT
By: Anthony J. O'Lenick Jr., Siltech LLC, and Crai…
In this discussion, Tony O'Lenick looks to Craig Bonda to explain the photochemical differences between the singlet and triplet states of UV filters. These differences are important to the formulator, as their chemical reactions can lead to the destruction of sunscreens.
Oct 13, 2010 | 09:51 AM CDT
Researchers at the University of Gothenburg and Chalmers University of Technology have investigated what happens when sun care products break down in the presence of UV radiation to better understand photocontact allergy with this process.
Sep 01, 2010 | 10:52 AM CDT
By: Katie Schaefer, C&T magazine
In 1876, Charles Darwin observed the secretion of yellow matter from the rootlets of ivy. Little was known about the material until 2008, when Mingjun Zhang, PhD, an associate professor of biomedical engineering at the University of Tennessee, and his research team found nanoparticles in the yellow matter.
Sep 01, 2010 | 10:41 AM CDT
By: Isabelle Rodriguez, PhD, Roberto Fenollosa, Ph…
Silicon microspheres are described as UV, visible and infrared (IR) radiation filters. Parameters of these spheres including shape, smoothness, refractive index and size are examined for their potential benefits in cosmetic formulations. Finally, the ability of the spheres to block IR radiation is evaluated for thermo-regulatory effects.
Sep 01, 2010 | 10:30 AM CDT
By: Paul Staniland, PhD, and Julian P. Hewitt, Cro…
The production of a range of titanium dioxide-based dispersions is explored to provide enhanced UVA protection, in comparison with ultrafine titanium dioxide. Formulations containing these dispersions as the only active are shown to achieve a UVA protection factor that is 1/3 of the labeled SPF value, thus meeting European Commission recommendations.
Jul 27, 2010 | 04:40 PM CDT
By: Anthony J. O'Lenick Jr., Siltech LLC
Tony O’Lenick asks industry expert Dennis Lott of Florida Suncare Testing Inc. to distinguish between UVA and UVB radiation to explain how organic UV filters can be formulated into sunscreens to help protect against these rays.
Jun 30, 2010 | 10:58 AM CDT
Researchers at the University of Tennessee report that English ivy nanoparticles may protect skin from UV radition better than other metal-based nanoparticles such as titanium dioxide (TiO2).
Jun 15, 2010 | 05:05 PM CDT
Kalichem Italia S.r.l. has introduced a physical sunscreen that imparts a soft focus antiaging effect without a white appearance on skin. The material is based on hydroxyapatite, one of the basic constituents of bones and teeth.
May 13, 2010 | 11:23 AM CDT
Hallstar has developed a silicone fluid to enhance the stability of the UVA filter avobenzone by quenching its excited state, as well as improve the feel and spreadability of sunscreen formulations.
Mar 02, 2010 | 11:00 AM CST
Shiseido has launched four new sunscreens that protect skin against UVA and UVB radiation, which can lead to cell damage, sunburn and premature signs of aging.