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Type: Article

Section: Testing > Sun Protection

To prevent and repair UV-induced skin damage, a sustainable ingredient was developed from Sargassum vulgare, a brown seaweed that naturally evolved phlorotannins to defend against UV damage. The algae was fermented using a proprietary yeast to enrich this bioactive content; the resulting ingredient was tested as described here for skin benefits.

Brown Seaweed Ferment Propagates UV Damage Protection for Skin

To prevent and repair UV-induced skin damage, a sustainable ingredient was developed from Sargassum vulgare, a brown seaweed that naturally evolved phlorotannins to defend against UV damage.

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Pioneering Skin Testing: Download our Informative Poster

Experience the unmatched predictability of Strat-M® membrane – a synthetic, non-animal based model for transdermal diffusion testing.

Comparatively Speaking: SPF and Calculated SPF

In order to prepare the industry for the upcoming Sunscreen Symposium, organized by the Florida chapter of the Society of Cosmetic Chemists, industry expert Tony O’Lenick asks Dennis Lott to explain the difference between SPF and calculated SPF. This is the first of two columns on sun protection.

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Editor's Note: Discontinuity and Your Inner Innovator

One innovative mash-up has been capturing consumer dollars: multifunctional color cosmetics. Whether fortified with SPF or moisturizing properties, makeup with added benefits is driving color sales. In relation, this month, we've created our own color and sun mash-up.

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.

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.

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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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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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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.

Interpretation of SPF In vivo Results: Analysis and Statistical Explanation

Methods for determining SPF in vivo are based on a biological response by human skin. To overcome intrinsic variation in these methods, large numbers of volunteers and statistics are required; however, these concepts are often poorly understood or worse, misinterpreted. This article discusses how these values should be interpreted and explains what they mean to formulators.

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Interpretation of SPF In vivo Results: Analysis and Statistical Explanation

Methods for determining SPF in vivo are based on a biological response by human skin. To overcome intrinsic variation in these methods, large numbers of volunteers and statistics are required; however, these concepts are often poorly understood or worse, misinterpreted. This article discusses how these values should be interpreted and explains what they mean to formulators.

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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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.

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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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.”

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