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76 Results
Type: Article
Section: Testing > Sun Protection
Sun Care
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.
Efficacy
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.
Efficacy
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.
Efficacy
Photostability Test for Additional Sunscreen Claims, Part I: Protocol Setup
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.
Event Coverage
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.
Sun Care
W/O/W Technology to Enhance Organic UVA/UVB Sunscreen Performance
A new water-in-oil-in-water technology is described here that functions as an isolating shield, preventing UV filter particles from aggregating and helping their dispersion in formulas. The technology is shown in vitro and in vivo to improve SPF performance, UVA/UVB wide band high protection ratio, SPF sustainability and safety concerns regarding skin penetration.
SPF/Sun
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.
Sun Protection
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.
Method/Process
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.
Sun Protection
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.
Sun Protection
Influence of Pressure During Spreading on UV Transmission Results
This work evaluates the impact of applied pressure during sample spreading on the in vitro measurement of UV transmission. The authors work in a range of pressures between 50–200 g and demonstrate that pressure control is a key parameter that should be strictly controlled to ensure the reliability of test results.
Sun Protection
Influence of Pressure During Spreading on UV Transmission Results
This work evaluates the impact of applied pressure during sample spreading on the in vitro measurement of UV transmission. The authors work in a range of pressures between 50–200 g and demonstrate that pressure control is a key parameter that should be strictly controlled to ensure the reliability of test results.
Color Cosmetics
Cosme-phenomenology
According to Merriam-Webster, phenomenology is the study of consciousness and self-awareness as a philosophy. Putting this with epidermic led me to what the industry now considers wellness and corneocare, which Steventon describes.
Sun Protection
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.
Sun Protection
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.
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.
Sun Protection
Testing SPF 15–100, Indoor vs. Outdoor
Lab tests on sunscreens show it takes more energy to produce mild erythema on protected skin than unprotected skin. Yet the FDA questions the need for SPFs higher than 50. In response, two outdoor studies were conducted using commercial products to challenge standing premises and determine if there is a measurable difference in an SPF 100 and SPFs of 50 or less.
Sun Protection
Solar Flair
If like me, you’re just daydreaming of the beach, this collection of articles will enlighten you with its focus on sun protection, SPF testing, damage repair and more.
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