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160 Results
Section: Testing
Sun Protection
ISPE Presents Complete Immersion SPF Testing
ISPE Laboratories presents a new method to evaluate the solar protection factor of water-resistant products.
Tech Transfer
Comparatively Speaking: Standard vs. Quantum-level Research
If you've ever conducted an experiment and could not explain the results, it could be due to hidden variables. This leads to what's referred to as quantum-level research, which is described by Nava Dayan, Ph.D., in this edition of "Comparatively Speaking."
Magazine
The Emotion Paradox in Product Testing: A Commentary
A real challenge in the assessment of consumer emotional responses has been the need for validated but meaningful measures. Commentary outlined are benefits and drawbacks of various methods and asks the larger question of precisely what’s being measured.
Literature/Data
[update] Comparatively Speaking: Matter vs. Mind Claims
This "Comparatively Speaking" was revived from 2008 for its relevance today. In it, Tony O’Lenick posed the question: What’s the difference between a "mind" claim and a "matter" claim? Industry expert Johann Wiechers, Ph.D., explained.
Literature/Data
Comparatively Speaking: Gene vs. Protein Expression Studies
What is the difference between gene and protein expression studies to evaluate the efficacy of cosmetic products? Nava Dayan, Ph.D., explains in this edition of "Comparatively Speaking."
Sensory
[podcast] Layering Experiences to Create Product Complexity
"[One] area where there’s quite a bit of interest ... is around the notion of complexity. ...In this idea of complexity, [we've done] work in sort of pairing, sequencing and combining." Learn more about this concept from Charles Spence, Ph.D., in this free podcast, sponsored by Berjé.
Hair Care
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.
Moisturizing
Biomimetic vs. Traditional Skin Moisturization: An In vivo Comparison*
To alleviate skin dryness, humectants and occlusive substances are traditionally used, mostly in combination. A third, relatively recent approach is biomimetic, i.e., active ingredients with lamellar structure containing skin-identical lipids. The aim of this study was to determine whether a biomimetic cream could deliver superior moisturization to human volunteers, compared with a conventional moisturizer containing petrolatum and mineral oil.
Method/Process
Tape Stripping Method in Humans: Comparison of Evaporimetric Methods
The current preliminary study compared the sensitivity and correlation of open chamber device and closed chamber device on a tape stripping human model. The amount of SC removed by tape stripping was also quantified with a protein assay method.
Testing
Q&A: How Do Conventional and Accelerated Preservative Tests Compare?
"How do accelerated and conventional preservative testing compare? What can each measure?" This reader inquiry led us to John Yablonski, of BioControl, who provided the following answer.
Sensory
Quality Comparison of W/O and O/W Photo-Protection Creams
The authors determined the quality of a photoprotector W/O cream by evaluating its microbial control, physicalchemical stability and sensory appeal in comparison to an O/W photo-protector cream.
Method/Process
Tape Stripping Method in Humans: Comparison of Evaporimetric Methods
The current preliminary study compared the sensitivity and correlation of open chamber device and closed chamber device on a tape stripping human model. The amount of SC removed by tape stripping was also quantified with a protein assay method.
Regional
Here Comes the Sun Protection: ISO Test Methods
Our knowledge of the sun and its effects on skin has increased over the years, including the damaging effects of UVA and UVB light. Testing methods for UVA and UVB rays differ; the following is a review of the testing protocols of the European Union and United Kingdom. (Click through to the Digital Edition)
Method/Process
Article Download: Evaluating Hair Conditioning With Instrumental Combing
Download the complete article here.
Animal Alternatives
ECHA on Combining Animal Alternative Data to Assess Sensitization
The ECHA recently published guidance for REACH registrants on reliably combining different sources of animal alternative-derived test data to assess the skin sensitizing potential of chemicals.
Method/Process
Test Model Developed to Predict Skin Permeability of Compounds
A test model published in the
Journal of Chromatography A
uses retention on octadecyl, cholesterol-bonded and immobilized artificial membrane columns to accurately predict the skin permeability of compounds.
Color Cosmetics
Eye Opener: Combined Formulation Strategy Ensures Mascara Success
This article reviews the key components of mascara formulations, including waxes, film-formers, fillers—and importantly, packaging. Test formulations are created here using a combined strategy for ingredient selection and assembly, and assessed for various properties.
Method/Process
Capillary Electrophoresis: ‘Green’ Method to Quantify Cosmetic Components
In relation, in his Ph.D. thesis, Josu López, researcher, developed and applied three “green” analytical methods to simultaneously analyze and quantify various components used in cosmetics.
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