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In vivo
New in In vivo (page 4 of 6)
May 04, 2009 | 04:30 PM CDT
In vivo Quantification of Corneocyte Lipids by Image Analysis
By: David Boudier, Nathalie Guichard, Josselin Bre…
In a new method described here by the authors, fluorescence emitted from samples and captured by image analysis is used to quantify the number of lipids present in the cornified cell envelope. This in vivo approach is fast and noninvasive and could be used to screen molecules for potential moisturizing and restructuring effects.
Oct 30, 2008 | 05:44 PM CDT
The Air Up There: Skin VOCs
By: Katie Schaefer, C&T magazine
In 2001, Japanese researchers reported that after the age of 40, some individuals develop a malodor known as “aging odor,” attributed to the presence of unsaturated C9, 2-nonenal. George Preti, PhD, a member of Monell Chemical Senses Center and an adjunct professor of dermatology at the University of Pennsylvania School of Medicine, was interested by this report and began to conduct research of his own.
Nov 02, 2007 | 10:40 AM CDT
Dihydroavenanthramide D for Anti-irritant and Anti-itch
By: Gerhard Schmaus, Martina Herrmann, Holger Jopp…
Naturally occurring and synthetic avenanthramides were evaluated for their efficacy to inhibit substance P-induced release of histamine from mast cells. In vivo tests showed that four synthetic avenanthramides demonstrated ability to significantly reduce histamine-induced itch and redness. Dihydroavenanthramide D was also shown to be an excellent antioxidant.
Oct 01, 2007 | 05:03 PM CDT
In Vitro and In Vivo Offered for Sunscreen Testing
Laboratoire Dermscan and HelioScreen Labs are combining their skills to offer a complete new in vitro / in vivo service in the field of sunscreen testing.
Mar 27, 2007 | 04:55 PM CDT
Enhancing, Measuring Skin Penetration
Skin penetration is of great interest to personal care formulators for many reasons. Following are a few recent findings.
Mar 02, 2007 | 11:08 AM CST
Tech Edge--Optical Tools to Examine the Structure of Cosmetics Products
By: Phil Cummins, PhD, Estée Lauder
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.
Dec 01, 2006 | 11:08 AM CST
New Directions for Sensitive Skin Research
By: Jennifer A. Davis and R. Randall Wickett, PhD …
This brief review provides an insight into the current standing of sensitive skin research, including recent findings on the possible role of nerve growth factor as an underlying mechanism and predictive tool for sensitive skin.
Apr 27, 2006 | 09:22 AM CDT
A Screening Technique for Antiperspirant Testing
By: O. Wunderlich, T. Frase and B. Hughes-Formella…
A standardized in vivo test design for screening up to eight antiperspirant formulations in one panel is described. Dose-response curves for new raw materials or formulations can be performed in the same panel.
Apr 21, 2006 | 09:56 AM CDT
Subjective Skin Condition And Its Association With Objective Skin Measurements
By: L.P.L. van de Vijver, E. Boelsma, R.A. Bausch-…
From a group of 302 volunteers, the authors obtained both selfreported Subjective evaluations of skin condition and objective measurements of skin conditions, and then looked for correlations between the subjective and objective skin measures.
Feb 28, 2006 | 06:06 PM CST
A Dermatologic View--Bioengineering Analysis of Water Hydration
By: CM Lee, University of California; HI Maibach, …
The water content of the stratum corneum (SC) influences almost every biophysical property measurable at the skin surface. Water hydration can be measured using the plastic occlusion stress test (POST) or the water sorption-desorption test (WSDT).