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Section: Testing > Sun Protection

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Photostability Leads the Way: Formulating Safer Sunscreens

The need to prevent skin from UV damage is well-understood but the most effective way to achieve this is not. Here, a novel photostabilizer is presented in a test pump sunscreen spray formula as part of a total photoprotection strategy.

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SPF Testing: Who's Got Their 'Backs?'

"Isn’t it time for governments and industry to standardize an in vitro SPF test to replace human testing?" Karl Laden, Ph.D., of Alpa Cosmetics, asks in this brief commentary. What do you think?

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Kao Takes the Heat Off Infrared-exposed Skin

By focusing on principle factors related to light wave interference, Kao researchers have identified a means to selectively block the NIR wavelength.

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Effective Sunscreens for Everyone Under the Sun

Today, we take the effectiveness of sunscreen products for granted. As the industry knows, this performance is not simply a happy coincidence. Here, we review the steps in the sun care R&D process and consider where questions may arise.

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SPF Debate Puts Derms to the Test

Is the word we're spreading about sunscreen efficacy wrong? A new paper in the Journal of the American Medical Association thinks so. It holds that SPF values above 30 do make a difference.

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Patent Pick: L'Oréal Steps Up the Sunscreen Game

Pop Quiz: What does it take to achieve a high SPF, high UV-A rated sunscreen within the U.S. FDA's sunscreen filter constraints? This isn't a game; it's the focus of a new patent application from L'Oréal. Read on to learn more.

Wise Words From the Bench with Gavin Greenoak

After 25 years in the industry, Gavin Greenoak, managing and scientific director of the Australian Photobiology Testing Facility Pty., Ltd. (APTF), continues to strive for a better understanding of the interaction of light and the human body. Greenoak’s career began in cancer research, which has afforded him unique insight of skin biology and the effects of sun exposure.

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Here Comes the Sun Protection: ISO Test Methods

Our knowledge of the sun and its effects on skin has increased over the years, including the damaging effects of UVA and UVB light. Testing methods for UVA and UVB rays differ; the following is a review of the testing protocols of the European Union and United Kingdom. (Click through to the Digital Edition)

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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.

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SPF 100+ Efficacy Put to the Test in ‘Actual Use’

Recent research in Journal of the American Academy of Dermatology sought to find out if, when used under conditions that users typically apply sunscreen, SPF 100+ products provided higher protection than their SPF 50+ counterparts.

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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.

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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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Improving the UV Exposure of Sunscreen During In vitro Testing

In any sun protection evaluation method, an irradiation step is required to determine the photostability of the UV filters in a product. The aim of this study was to identify key parameters involved to improve this UV exposure. Here, the authors consider temperature at the substrate surface, air flow influence and beam uniformity during UV exposition.

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Letter to the Editor: Criticisms of 'Safer Solar Protection' Article

"My feeling is that the paper by Stanek and Gupta, in its present form, might add to the sunscreen confusion." In this letter to the editor, Paolo Giacomoni, Ph.D., provides his opinion on what the authors missed.

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.

Science Exposed—What Should the Minimum Recommended SPF Be to Avoid Sunburn?

“Science Exposed” is a new column aimed at digging into industry controversies to strip them down to the scientific facts. Here, sun protection expert Brian Diffey, PhD DSc, critiques the current SPF test method.

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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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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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