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Testing
New in Testing (page 7 of 24)
Mar 02, 2011 | 03:58 PM CST
Interpretation of SPF In vivo Results: Analysis and Statistical Explanation
By: Marc Pissavini and Olivier Doucet, Coty-Lancas…
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 02, 2011 | 03:53 PM CST
Adapting SPF Testing Methods for Mineral Sunscreen Density
By: Paul G. McCormick, University of Western Austr…
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 | 11:00 AM CST
Researcher Develops Probe for Non-invasive Below Skin Imaging
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 | 11:44 AM CST
ICCVAM and NICEATM Hold Meeting on Endocrine Disruptor Test Method
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 03, 2011 | 03:43 PM CST
A Review of Genomic Techniques in Cosmetics Testing
By: Remona Gopaul,*† Helen Knaggs, PhD,* and R. Ra…
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.
Jan 19, 2011 | 08:03 AM CST
R&D Awards Finalists Announced
Cosmetics & Toiletries magazine has announced the finalists for its 2011 R&D Awards, which will honor one new ingredient for its design and one finished product for the craft of its formulation. Winners will be announced at In-Cosmetics in Milan.
Dec 28, 2010 | 02:27 PM CST
Genomics Take the Cake at the SCC December Meeting
By: Rachel Grabenhofer, C&T magazine
The Society of Cosmetic Chemists (SCC) took innovation down to the genome level in not one but two of the five conference tracks presented Dec. 9–10, 2010, at the Annual Scientific Meeting and Technology Showcase.
Dec 21, 2010 | 02:12 PM CST
ISO Equips Formulators to Identify Low-risk Cosmetic Products
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 | 04:35 PM CST
Evaluating the Physiochemical Properties of Emollient Esters for Cosmetic Use
By: Mihaela Gorcea and Donna Laura, International …
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.
Nov 01, 2010 | 01:51 PM CDT
Fluorescence Laser Scanning Confocal Microscopy to Assess the Penetration of Low Molecular Protein Hydrolyzates Into Hair
By: Olga Freis and Dominique Gauché, Laboratoires …
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.