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Section: Testing > Sun Protection

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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J&J Points to Collaboration and 6 Areas for Future Growth

“We need to openly publish our scientific data and challenge each other to progress,” said J&J's Josh Ghaim, Ph.D., during the IFSCC 2016 Congress. “We can then align standards and simply let the competitive technologies and products speak for themselves.”

Photostability Test for Additional Sunscreen Claims, Part II: Calculations and Results

Proposed here is an in vitro method, based on UV transmission measurements at two irradiation doses, to test and rank sunscreens based on their photostabilities. This approach was used to assess some 107 sunscreens and shows how, by strictly controlling key parameters, comparisons between the photostabilities of products can be made, with potential for new label claims.

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FDA Pushes Higher Limits, New Labeling and More Data for Sunscreens

Broad spectrum sunscreens are critical for preventing skin cancer and UV damage, yet many of their essential requirements have not been updated in years. This was the driver for new sunscreen regulatory rules proposed by the FDA.

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What is Light? A Brief History of Light and Its Behavior

This primer provides cosmetic scientists, engineers and physicists with an understanding of light. The quantum mechanics of history continue today as a guiding paradigm for computers, satellites and mobile communications, in addition to the cosmetically related fields of photoprotection and visual effects imparted through makeup to change appearance.

New U.S. UV Filters and the Cosmetic Outlook in Canada for Sunscreens

Skin cancer is the most common cancer today, but only recently has industry pressure and political leadership compelled changes in the North American regulatory paradigm of sunscreen products. The passage of the Sunscreen Innovation Act in the United States and the suggestion to regulate sunscreens as cosmetics in Canada would give regulators the tools to reboot a stalled approval system.

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The Big Reveal: UV Imaging Uncovers Sun Protection, Skin Dryness and Microbiome

UV reflectance and fluorescence photography can provide insights into skin conditions that are otherwise not visible. This paper describes how these techniques can effectively measure sun protection, dry skin, acne and the microbiome, to aid in product development.

Article sponsored by Gattefossé

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2025 Will See Faster, More Ethical and Accurate SPF Testing: ISO Approves Two New Methods

In December 2024, the ISO gave its long-awaited final approval of two SPF test methods that experts say are more ethical, economical and accurate than current approaches. One in particular is also reportedly faster, reducing analysis from weeks to days.

FDA Publishes Opinion on Two Sunscreen TEAs and Is Urged for More Action by PASS

The end of February was busy for the U.S. Food and Drug Administration (FDA), which published two letters on the Time and Extent Applications (TEAs) for diethylhexyl butamido triazone (Uvasorb HEB) and amiloxate (Neo Heliopan E 1000), finding insufficient scientific evidence to claim either as generally recognized as safe and effective (GRASE) and denying their addition to the OTC Sunscreen Monograph.

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