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Type: Article

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.

Research Pathways to Photostable Sunscreens

This article provides a visual depiction of pathways that UV filters undergo when exposed to solar radiation; such pathways often lead to photo-instability. A fluorescence technique is described that has led the author to identify compounds that preserve photostability in a novel manner— by quenching the UV filter’s singlet excited state.

Research Pathways to Photostable Sunscreens

This article provides a visual depiction of pathways that UV filters undergo when exposed to solar radiation; such pathways often lead to photo-instability. A fluorescence technique is described that has led the author to identify compounds that preserve photostability in a novel manner— by quenching the UV filter’s singlet excited state.

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Latin Americans Need Better Sunscreens

Consumers need extra photoprotection in Latin America. Why? Marcelo de Paula Corrêa explains.

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Unexpected Paths to Sunscreens

Teleportation was once science fiction. Today's it's somewhat of a reality, if you consider how Facebook Live, Facetime, Skype, etc., transport our likenesses through time and space. I sense this indirect path may be the future to sunscreens.

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Guiding Sunscreen Traffic Across the Globe

Sunscreens are classified and regulated differently around the world. For instance, the United States considers sunscreens as OTC products, while Canada has a two-part classification system; other places classify sunscreens as cosmetics. Labeling and registering differ worldwide as well. In some cases, labels require certain Drug Facts or safety registration numbers, among others. This article reviews these differences.

Adapting Spf Testing Methods For Mineral Sunscreen Density

Adapting SPF Testing Methods for Mineral Sunscreen Density

A sunscreen layer’s thickness is critical to its SPF. However, current regulations specify a mass application rate for testing, rather than a volumetric application rate. This significantly underrates the SPF values of mineral sunscreens due to their higher densities since, compared with their relative organic counterparts, thinner films are being tested, as will be shown here.

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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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.

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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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.

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Hallstar’s Sunscreen Testing Platform is More Science than Art

Hallstar’s patented Solasure™ platform is the dawning of a new age in sunscreen testing: scientific, quantified, uniform, repeatable, easy-to-use, and cost-effective.

Adapting SPF Testing Methods for Mineral Sunscreen Density

A sunscreen layer’s thickness is critical to its SPF. However, current regulations specify a mass application rate for testing, rather than a volumetric application rate. This significantly underrates the SPF values of mineral sunscreens due to their higher densities since, compared with their relative organic counterparts, thinner films are being tested, as will be shown here.

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Smart Sunscreen Packaging Shows How Long Until You Bake

Imagine smart packaging that tells the consumer when it's time to reapply another glob of sunscreen. Well, it's already on the horizon.

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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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Wet Skin Factor for Sunscreens: An In vitro Method, Part I

Sunscreens designed for application to wet skin are popular in part due to convenience, skipping the drying step completely. In relation, these authors propose a new in vitro test to compare the wet skin factor of sun care products. Here, 20 products were tested and compared according to several conditions in order to define the best parameters for the method.

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Wet Skin Factor for Sunscreens: An In vitro Method, Part II

Sunscreens designed for application to wet skin are popular in part due to convenience, skipping the drying step completely. In relation, these authors propose a new in vitro test to compare the wet skin factor of sun care products. Here, 20 products were tested and compared according to several conditions in order to define the best parameters for the method.

Photostability Test for Additional Sunscreen Claims, Part III: New Claim

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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