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144 Results
Section: Testing > Method/Process
Method/Process
Video Imaging in the Measurement of Makeup Efficacy and Performance
Video imaging techniques add quantitative data about the visual effects of makeup when evaluating efficacy and performance of products such as mascaras, lip colorants, facial foundations and nail enamels.
Method/Process
How Damaged is Hair? Part III: Better Defining the Problem
By identifying elements at the heart of technical issues in hair, product developers will uncover options to consider for improving its health and appearance. Completing our three-part series, this final piece on hair damage provides insight on new ideas and strategies for problematic hair.
Tech/Equipment/Services
Good Vibrations: Spectroscopic Imaging to Visualize the Delivery of Actives
Understanding how actives are delivered is essential to product development and to provide scientific data in support of a product’s efficacy. Vibrational imaging spectroscopy is shown here to enable the visualization of the penetration of cosmetic actives into skin, hair and nails.
Consumers/Market
The ‘Skin’ Crowd: Emerging Trends for Technology in Skin Care
As skin care becomes more scientific, consumers are making it a point to better understand their products. Apps and brands tailoring to the consumer experience are amassing a growing following, leading to shifts in purchasing dynamics.
Method/Process
Three Decades of Patch Testing: Trends in the North American Populace
This report evaluates the trends in the results of patch testing. The patch test reactions were surveyed retrospectively. The results were statistically compared between 1970 and 2002 because appropriate interpretation of the numbers has public health opportunities.
Method/Process
Lab Lessons—Wise Words From the Bench With Sergio Nacht, PhD
Today, product formulation goes hand in hand with efficacy testing, but nearly 40 years ago, when Sergio Nacht, PhD, started out in the personal care industry, it was a different story. Throughout his decades in personal care, Nacht has developed methodologies that have allowed the personal care industry to establish efficacy of a product and convey this to the consumer. He has also been instrumental in the increased efficacy of personal care products through sustained release.
Method/Process
A Dermatological View: Using Photochemiluminescence to Quantify the Antioxidative Capacity of Topicals
Exposure to ultraviolet radiation (UVR), air pollutants, chemical oxidants and aerobic microorganisms may damage the skin. In particular, reactive oxygen species (ROS) are considered a likely contributor to skin aging, cancer and certain skin disorders.
Testing
Propanediol Caprylate: Shifting the Microbiome, Sebum Levels and Classic Approach to Dandruff
Propanediol caprylate was previously shown to deactivate
Malassezia
for dandruff control. In parallel, its effects to shift the balance of
Cutibacterium
and
Staphylococcus
in the scalp microbiome, and reduce dandruff and sebum are explored here.
Method/Process
Testing the Safety and Efficacy of Multifunctional Personal Care Products, A Primer
Multifunctional products may offer solutions to consumer challenges but as the needs of consumers grow more complex, so do their safety and efficacy testing. This article provides a primer on these considerations.
Sensory
The Perplexing Topic of Hair 'Type': How Do We Classify Hair?
Most hair-related properties and issues can be rationalized by fiber size and shape, and/or the consequences of extreme conditions. However, the varying reactivity of different hair types with chemical treatments suggests potential differences in structure.
Method/Process
Tech Edge--Optical Tools to Examine the Structure of Cosmetics Products
To monitor or anticipate what can happen in the creation of a cosmetic product when components are combined and as time passes is no trivial task especially when compounded with the psychophysical needs for the product to fit a specific concept and to spread, feel, pour and appear elegant.
Method/Process
Advanced Methods Measure Skin Penetrants at the Parts-Per-Billion Level
Healthy and intact skin was formerly considered an impermeable barrier designed to shield the living organism from all types of environmental injury, and certainly offering protection from all things chemical. Now skin is recognized as a semi-permeable membrane. Microorganisms cannot penetrate it, but it is pervious to chemicals, selectively allowing molecular passage in and out of the skin.
Method/Process
Tech Edge: Optical Tools to Examine the Structure of Cosmetic Products
To monitor or anticipate what can happen in the creation of a cosmetic product when components are combined and as time passes is no trivial task especially when compounded with the psychophysical needs for the product to fit a specific concept and to spread, feel, pour and appear elegant.
Method/Process
[updated] The DNA & Cosmetics Consortium Developing Database for Beauty Ingredient Traceability
France-based DNA Gensee features "a DNA analysis laboratory to identify the plant species present in ... raw materials, ingredients and finished products," according to the company.
Efficacy
The New Stir in Anti-aging: Small-chain Algal Peptides to Regulate Sulfur
Sulfur regulators such as small chain peptides (SCPs) and sulfide donors are an untapped sector for cosmetic science. The present work explores a natural compound to up-regulate cellular sulfur, affect the cell cycle and reduce signs of aging.
Method/Process
Advanced Methods Measure Skin Penetrants at the Parts-Per-Billion Level: Part II
Part I of this Dermatologic View column appeared in the January issue of
C&T
magazine and described advanced methods to measure skin penetration such as Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) and Atomic Absorption Spectrophotometry (AAS). Here, the authors continue this investigation of advanced methods to measure skin penetration.
Method/Process
Fluorescence LSCM to Assess the Penetration of Low Molecular Protein Hydrolyzates Into Hair
The present study uses confocal laser scanning fluorescence microscopy to assess the penetration of protein hydrolyzates into hair. While higher amounts of protein were found in the cuticle, still significant quantities were observed in the cortical parts of hair, and this penetration was enhanced by longer incubation times.
Method/Process
Detecting the Protective Power of a Hair Health Multi-peptide: An Integrated Approach
This work measures the antioxidant potential of a hydrolyzed cicer seed extract, a multi-peptide derived from chickpeas, to protect hair. Advanced methods such as FTIR, DCFH-DA assays, cyclic fatigue and DSC testing are combined for a comprehensive view.
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