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337 Results
Type: Article
Section: Testing > Method/Process
Method/Process
Good As Gold: Validating Alternative SPF Test Methods
This article presents alternative sunscreen test methods to the gold standard ISO 24444:2019. Options range from in vivo calibrated in silico tools and in vitro plate procedures, to a hybrid method. This discussion highlights their potential and procedures for their validation with the aim of replacing the current standard.
Natural/Sustainable
Planting Ideas: Upcycled Rubber Seed Offers a Renewable Cosmetic Ingredient
The sustainable utilization of by-products from the para rubber production industry is presented here for cosmetics. Experiments confirmed the safety of para rubber seed oil, in addition to antioxidant and skin-lightening efficacies.
Method/Process
[video] Understanding Adhesion of Pollution Particles to Skin
University of Le Havre researchers sought to better understand the adhesion mechanism of pollution particles to skin. Here, Lívia Salomao Calixto, Ph.D., explains their study design and findings, presented at the IFSCC Conference in Milano.
Method/Process
Solving Sensitivity: In vitro Assays for Sensitive Skin
There are many mysteries regarding sensitive skin, including how to minimize the chance that a product will create a negative response. This article details causes of this syndrome, along with details for testing personal care ingredients for their interaction with sensitive skin.
Method/Process
[video] Standardized Test to Assess Anti-irritant, After-sun Gel
While these researchers could not prove the efficacy of the after-sun gel, they did establish the first-known, standardized approach to assess the efficacy of an after-sun product. Learn more from the video.
Method/Process
Grooming Habits: A New Focus for Ethnic Care
Product developers often develop hair solutions for a specific ethnic market; however, fundamentally, hair structures are the same. The present article proposes how grooming habits, along with drastic variations within a single head of hair, should be considered.
Safety/Stability
Why the FDA's 'Sunscreens in the Bloodstream' Study is Flawed
A recent study published in the
Journal of the American Medical Association
tested the potential systemic absorption of certain sunscreens. Results identified their presence in subjects' bloodstreams; however, as industry expert David Steinberg explains, the study is misleading and fails to consider crucial variables.
Efficacy
Total Breakdown: Recovering Anti-aging Efficacy After Collagen Fragmentation
When collagen breaks down, the broken fragments can hinder the performance of anti-aging actives over time. This column examines methods by which materials can overcome these aging-related issues in collagen production.
Method/Process
Making Moves Toward an Animal Testing-free Future
I think the cosmetics industry will agree: we want to see animal testing phased out in our lifetimes. Not only for ethical reasons, but because these methods are much less relevant than today's alternatives. The good news is worldwide efforts are getting us there; following are recent examples.
Method/Process
Stability Testing Guidance for Product Safety and Shelf-life Insight
Routine stability testing provides cosmetic manufacturers critical data about a product’s safety and shelf life. While not required by legislation, these tests can ensure the successful marketing of products. The present paper provides and overview of the basics manufacturers should cover when stability testing products.
Efficacy
Quantifying Visual Aspects of Hair
Quantitive claims regarding hair care can be questioned if the results and approaches do not equate to real life occurrences. This article highlights ongoing research efforts that aim to improve our understanding of visual evaluations of hair.
Skin Care
Judgment Stands: Emollient Profiling Proven Consistent Over Time
Previously, the “Oil Sensory Qualification” test was outlined to quickly evaluate the sensory properties of raw materials in formulas. As a follow-up, this article describes the further development and validation of this test for consistency over time.
Method/Process
'Behind the Gloss'—Multiple Angles Reveal New Soft-focus Insights
Described here is a novel method to investigate the soft-focus effects of powders. It utilizes a handheld, multi-angle spectrophotometer to capture reflectance spectra at various observation angles. Results showed variances in results taken in the trans or “behind the gloss” plane, indicating which powders provide the best light-scattering capabilities.
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.
Literature/Data
Quantifying Well Aging: A Mathematical Sketch to Predict Age
There is no biological evidence to explain why some individuals look older or younger than they really are. This work sought to quantify the cutaneous characteristics of well aging based on focus group input, word clouds, biometric measurements and more.
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."
Tech/Equipment/Services
Is Your Microbiology Lab FDA-compliant? Part II: Cultures, Growth Media, Reagents and Testing
This two-part article provides an overview of areas relevant to the U.S. Food and Drug Administration’s (FDA’s) inspection of cosmetic microbiology laboratories. Part 1 covered personnel, facilities and equipment, test materials and procedures, and documentation. Part 2 addresses microbial cultures and growth media, biochemical reagents, test procedures and more.
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.
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