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Section: Testing > Sun Protection
People
Cosmetics & Toiletries
Adds Coty Sun Care Advisor
Cosmetics & Toiletries
is pleased to welcome Marc Pissavini, PhD, to its prestigious Scientific Advisory Board. Pissavini began his career as an analytical chemist and in 1998, joined the sun research department of Coty-Lancaster in Monaco. Since 2008, he has served as the director of Basic and Applied Research for the company.
Sun Protection
Adjusting Substrate/Product Interfacial Properties to Improve In vivo/In vitro SPF Correlation
This work evaluates the impact of a plasma treatment on test substrates to modify their surface energy, to more closely correlate in vitro SPF measurements with in vivo measurements—without chemically altering the test products. The authors chose the level of plasma modification to use on a substrate based on in vivo values; they explain how to choose it regarding specific formulas in a further paper.
Sun Protection
Adjusting Substrate/Product Interfacial Properties to Improve In vivo/In vitro SPF Correlation
This work evaluates the impact of a plasma treatment on test substrates to modify their surface energy, to more closely correlate in vitro SPF measurements with in vivo measurements—without chemically altering the test products. The authors chose the level of plasma modification to use on a substrate based on in vivo values; they explain how to choose it regarding specific formulas in a further paper.
Methods/Tools
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.
Literature/Data
[video] How Infrared Light Induces Cellular Senescence
Can infrared radiation cause cell death? This was the question Jaime Emmetsberger, Ph.D., of the Estée Lauder Companies, explored in a poster she presented at the International Investigative Dermatology Conference in Orlando. Learn more from this video interview.
Sun Protection
In Vitro and In Vivo Offered for Sunscreen Testing
Laboratoire Dermscan and HelioScreen Labs are combining their skills to offer a complete new in vitro / in vivo service in the field of sunscreen testing.
Sun Protection
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.
Sun Protection
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.
Companies
Croda to Increase Global Reach and Innovation with Lab Expansions
Croda lab expansion and renovation project at North American HQ adds innovation, education and efficiencies.
Method/Process
Are Your Sunscreens Infra-ready? New In vitro Method Puts Data Behind the Claims
Considering more and more sun care products are claiming infrared (IR) protection, it is important to standardize the parameters by which they are evaluated. Since IR-A and IR-B are the most implicated in skin damage, a test method was developed based on these wavelengths, as described here.
Sun Protection
7 Years in the Making: CE Recommends In vitro SPF Double Plate Test Method
"... No in vitro method had [previously] advanced to the stage that CE could recommend it. So those who did not want to use an in vivo method could use any ... unvalidated method; this should no longer be the case."
Anti-aging/Face
Infrared-y for Beauty
Anti-infrared product claims are on the rise in Asia and around the world.
Sun Protection
Determination of the In Vitro SPF
A ring test at six European test centers showed that SPF evaluations with good reproducibility and comparability could be obtained by an in vitro protocol measuring either transmittance or erythema-effective irradiance of product samples applied on PMMA plates.
Literature/Data
[podcast] Lauder Eyes Infrared Skin Damage
Infrared radiation penetrates deeper than UV and causes skin damage. What can be done to mitigate its effects? In this podcast, Tom Mammone, Ph.D., of The Estée Lauder Companies and Clinique Labs, explains. Listen now!
Sun Protection
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.
Sun Protection
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.
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
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.
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