Most Popular in Testing
- Modifying Hair’s Structure From the Inside
- SPF Tests Reveal No Ideal In vitro Substrate Exists
- How to Prove 'Rub-resistant' Sun Protection
- It'll Grow on You: Fully Functional 3D Skin Model
- Evaluating 1,3-Propanediol for Potential Skin Effects
- Zeta Potential and Particle Size to Predict Emulsion Stability
- Can New Approaches Pave the Way for Better Toxicology?
- Puberty and Parabens: New Study Cites 'Risk'
- A Dermatological View: Antioxidant Inhibits UV Erythema In Vivo in Humans
- Testing Moisturizing Claims for Skin
Recent in Testing (page 19 of 32)
Mar 16, 2011
As many formulators know, creating an efficacious cosmetic formulation can be problematic, which is why Johann Wiechers, PhD, is launching a new software platform based on his “Formulating for Efficacy” strategy.
Mar 4, 2011
Safety Evaluation Ultimately Replacing Animal Testing (SEURAT), a research initiative funded by the European Union's Health Programme and Colipa, has gotten underway with a kick-off meeting, held March 1-3, 2011, in Cascais, Portugal.
Mar 2, 2011 | Marc Pissavini and Olivier Doucet, Coty-Lancaster; and Olivier Brack, Statistique Industrielle KHI2 Consulting (KSIC)
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.
Mar 2, 2011 | Paul G. McCormick, University of Western Australia
A sunscreen layer’s thickness is critical to its SPF. However, current regulations specify a mass application rate for testing, rather than a volumetric application rate. This significantly underrates the SPF values of mineral sunscreens due to their higher densities since, compared with their relative organic counterparts, thinner films are being tested, as will be shown here.
Feb 23, 2011
Jannick Rolland, PhD, an optics professor at the University of Rochester in New York, has developed an optical probe equipped with a liquid lens that takes images under the skin’s surface without the use of invasive procedures.
Feb 16, 2011
ICCVAM and NICEATM will hold a peer review meeting on March 29-30, 2011, for an in vitro test method that determines if chemicals are endocrine disruptors.
Feb 3, 2011 | Remona Gopaul,*† Helen Knaggs, PhD,* and R. Randall Wickett, PhD†, *Nu Skin Enterprises, †College of Pharmacy, University of Cincinnati
Genomics assists product developers in understanding the expression of specific genes and their relationship to particular skin attributes. This article reviews commonly used testing techniques, such as DNA microarray, RT-PCR, SAGE, northern blot and RNA sequencing, and describes their application in testing the effects of cosmetic ingredients and products on skin.
Dec 21, 2010
The International Organization for Standardization (ISO) has released an international standard that will assist the cosmetic industry in identifying those products that have a low potential for contamination.
Nov 30, 2010 | Mihaela Gorcea and Donna Laura, International Specialty Products (ISP)
This study assesses the physicochemical properties of four known cosmetic emollient esters in vitro to predict their sensorial benefits and correlate their properties with in vivo sensory attributes. This evaluation serves as a guide to selecting specific emollient esters for various cosmetic applications and to predicting their sensory attributes.
Fluorescence Laser Scanning Confocal Microscopy to Assess the Penetration of Low Molecular Protein Hydrolyzates Into Hair
Nov 1, 2010 | Olga Freis and Dominique Gauché, Laboratoires Sérobiologiques division of Cognis; and Ute Griesbach and Hans-Martin Haake, Cognis
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.
Oct 7, 2010
Microtest Laboratories has posted a white paper on its website to help personal care product manufacturers understand microbial limits testing policies in accordance with the harmonization of the United States Pharmacopeia (USP), European Pharmacopeia (EP) and Japanese Pharmacopeia (JP) requirements.
Sep 22, 2010
Four test method evaluation reports are now available from ICCVAM that provide recommendations for performing eye safety testing more humanely, and for developing and using non-animal test methods and strategies. Among these reports, ICVAAM has recommended that a cytosensor microphysiometer (CM) test method may be used to screen surfactant-containing formulations such as personal care products for the ability to cause permanent or severe eye injuries.
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Between The Covers Discover:
- Amino acid distribution and biochemistry
- Examination of strength and anti-breakage product claims
- Hair: growth cycle, heat protection, shine, and color intensity and retention
- Overview of shampoos and issues relating to surfactants
- Science of hair color including chemical reactions and formulations
- Ethnic differences in hair and absorption of materials
- Evaluate and quantify visual properties of hair
- Dandruff-Causes and biology of the condition
- Hair styling products and polymers
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Finally! This book offers practical approach to the formulation chemist’s day-to-day endeavors by: addressing the innumerable challenges facing the chemist both in design and at bench, such as formulating with/for specific properties; offering valuable “tips” to troubleshooting issues regarding ingredient selection and interaction, regulatory concerns that must be addressed early in development, and the extrapolation of preservative systems; exploring the advantages and limitations of raw materials; addressing scale-up and pilot production process and concerns; and much more.Order your copy today.