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44 Results

Section: Testing > Sun Protection

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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.

New method to Reproduce In vitro Cosmetic Product Photostability Findings

The present article describes a reproducible method for determining the photostability of sunscreen products. This method is based in part on the in vitro determination of the UVA protection factor as proposed by Colipa for the irradiation aspect, and on the spectroscopy of a sunscreen in dilute solution for the absorbance measurement aspect.

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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.

The skin care industry has typically focused its testing on skin types 1 through 3, leaving 4% of tests with skin types 5 and 6.

Report: Superdrug Commits to Increase Sunscreen Testing on Darker Skin Tones

Superdrug has reportedly committed to include at least 35% of skin types 5 and 6 in its sun cream and skin care trials.

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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.

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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In Vitro UV Testing—Robot vs. Human Spreading for Repeatable, Reproducible Results

Repeatability and reproducibility are crucial to validate any test method. In order to master these criteria, the authors developed an automated spreading device and compared it with human spreading. Application of the device in eight laboratories and using 36 sunscreens revealed great improvements via automated spreading, ensuring good intra- and inter-laboratory variability.

In Vitro UV Testing—Robot vs. Human Spreading for Repeatable, Reproducible Results

Repeatability and reproducibility are crucial to validate any test method. In order to master these criteria, the authors developed an automated spreading device and compared it with human spreading. Application of the device in eight laboratories and using 36 sunscreens revealed great improvements via automated spreading, ensuring good intra- and inter-laboratory variability.

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