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Section: Testing > Sun Protection

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Sandblasting to Improve the Reproducibility of In vitro Sunscreen Evaluation

SPF test results from substrates treated using a traditional sandblasting technique are compared with those from substrates treated using a new process. Based on the topographic control of 10 batches and 34 sunscreen evaluations, the authors concluded the new process had better topographic reproducibility, consequently improving the SPF repeatability and reproducibility in vitro.

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[video] Student Poster: The Effects of Blue Light on Skin

Lisa Stevens, of Azelis and the University of Cincinnati, explained her research on the effects of blue light in skin during in the most recent TeamWorks conference and exhibition.

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.

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Patent Pick: Water and Sweat to Boost SPF?

Water and sweat are typical antagonists in the life of a sunscreen formula. Inventors from Shiseido have found a way for them to play key supporting roles, in this patent application. The plot thickens.

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Topical and Dietary Paths Provide Synergistic Sun Protection

Lycored, a producer of natural carotenoids, released a study showing that dietary carotenoids may create a synergistic effect with sunscreens to better protect skin against UV damage.

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In vitro/vivo SPF Correlation and Repeatability According to Substrate

This work evaluates the impact of three different substrates on in vitro SPF measurements, and defines experimental conditions to improve their correlation with in vivo values. Evaluations of 32 products, shown here, led the authors to conclude that molded substrates improved repeatability and correlation with in vivo SPF values.

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Total Exposure: The Future of Sun Care is Full Light Protection

History has revealed what has become well-known today: the human skin requires sun protection. But are UV filters enough? Here, the authors discuss the negative effects caused by other wavelengths. In addition, they propose a full light defense strategy.

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Combing Through Sun and Pollutant Effects on Hair

Trefor A Evans, Ph.D., institute fellow at TRI Princeton and long-time C&T scientific advisor, offers his insights on the latest developments in hair science and what they mean to the cosmetic formulator.

'[Sunscreen] developers will be able to innovate more efficiently while maintaining high standards of quality and safety for consumers.'

[update] How ISO's Endorsement of Two Test Methods Will Enlighten Sunscreen Development

After 10 years, sunscreen developers are nearing the finish line for more ethical, cost efficient, reliable and faster testing thanks to ISO's endorsement of two standards. The final vote was in September 2024. Here, two experts explain what this means.

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Sunscreen Data Requests, Misperceptions and the Public Health Crisis

"The FDA is not saying 40% of sunscreens (or whatever) do not meet its rules for safety and effectiveness—not to the extent the EWG is suggesting." But the FDA also is muddying the waters, according to PASS Coalition adviser Michael Werner.

Article Download: A Laboratory Method for Measuring the Water Resistance of Sunscreens

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Croda to Increase Global Reach and Innovation with Lab Expansions

Croda lab expansion and renovation project at North American HQ adds innovation, education and efficiencies.

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[video] News and Insights: SPF Testing, Pigment Restrictions & Cosmeceuticals

Summer has arrived, along with this week's recap from Cosmetics & Toiletries. Watch the video for our take on SPF 100+ testing, novel textures and more!

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Sunscreens and UV Exposure: A Q&A with Vincent Hubiche

Gattefossé SAS' Vincent Hubiche shared insight on how consumers need to be better informed with the amount of sunscreen they wear and the climate’s influence on sunscreen application.

In vitro/vivo SPF Correlation and Repeatability According to Substrate

This work evaluates the impact of three different substrates on in vitro SPF measurements, and defines experimental conditions to improve their correlation with in vivo values. Evaluations of 32 products, shown here, led the authors to conclude that molded substrates improved repeatability and correlation with in vivo SPF values.

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Future Testing, Safety and Formulating Headline the Sunscreen Symposium

"I am convinced the earth-shattering event [in sunscreens] will eventually become the greater awareness for the big difference between SPFindoor and SPFoutdoor," writes Uli Osterwalder, regarding new findings at this year's Sunscreen Symposium.

Bernard Fink, of the University of Goettingen, discussed sexual selection and the biology of beauty in relation to skin condition.

Alphorns, Cowbells, Magic and Gaming at IFSCC Zurich, part IV

The 23rd IFSCC Congress, held Sept. 21-23, 2015, reported “more facts and less illusions” to some 550+ delegates from across the globe at the forefront of cosmetic product innovation.

Knowledge in sun protection has become more comprehensive, making sunscreen testing and development more challenging. This article explores what we know and what is needed in terms of sunscreen testing, regulation and consumer communication.

Are UV Tests and Protection Headed in the Right Direction?

Knowledge in sun protection has become more comprehensive, making sunscreen testing and development more challenging. This article explores what we know and what is needed in terms of sunscreen testing, regulation and consumer communication.

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