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Nov 04, 2013 | 02:40 PM CST
By: Qing Huang, Zhen-Wu Mei, Koji Takata and Jianz…
The most common approach to determine ingredient deposition on hair is to analyze the treated tresses, but this poses several challenges. Instead, the authors describe a novel approach based on determining the amount of ingredient collected in the rinse water, and back-calculating the amount deposited on hair. Development and validation efforts discussed here use polydimethylsiloxane as a model compound.
Oct 08, 2013 | 11:56 AM CDT
By: Sébastien Miksa, Dominique Lutz and Céline Guy…
Repeatability and reproducibility are crucial to validate any test method. In order to master these criteria, the authors developed an automated spreading device and compared it with human spreading. Application of the device in eight laboratories and using 36 sunscreens revealed great improvements via automated spreading, ensuring good intra- and inter-laboratory variability.
Oct 08, 2013 | 11:52 AM CDT
By: Paul L. Edmiston, PhD, ABS Materials Inc.
Nanoporous organosilica particles were developed to swell upon the addition of organic solvents. These are evaluated here for encapsulating and controlling the release of fragrance. Slower, continuous release was observed, suggesting their ability to extend sensory benefits. In addition, the stimulated release of encapsulated lidocaine was studied, and results implicate their use to deliver cosmetic actives.
Oct 08, 2013 | 11:50 AM CDT
By: Cicely Sara Quintana Seguil, Belcorp
To improve the appearance of dry and wrinkled lips, it is necessary to hydrate them. Here, the author describes a lipstick concept to meet this need and a formulation process to achieve it. The product was then tested for immediate and long-lasting moisturization using a corneometer, and a quantitative study was conducted to rate its usability.
Oct 08, 2013 | 11:48 AM CDT
By: Ilona Matejková, Pavel Klein, Martin Pravda, R…
A novel mechanism to increase collagen production based on improved hydroxylation of the collagen fiber is described here. In relation, the effects of a hydrophobic derivative of a-ketoglutarate on this mechanism are examined, and results indicate increases in collagen production in senescent fibroblasts in vitro. In vivo, a significant reduction in wrinkles and improvement in elasticity were observed.
Oct 08, 2013 | 11:46 AM CDT
By: Peter Tsolis,The Estée Lauder Companies; and A…
Cosmetic formulators are constantly challenged to develop products for daily use, and mascaras in particular are one of the most researched (and scrutinized) products a woman can purchase. Scientists must go to great lengths to ensure this miracle product delivers on the eyelash benefits it advertises.
Oct 08, 2013 | 11:45 AM CDT
By: Howard I. Maibach, MD, University of Californi…
Glycerol is one humectant commonly employed due to its high hygroscopic and hyperosmotic properties. It is used in cosmetics as a moisturizer and in pharmaceutical formulations as an active compound.2 Being naturally present in the skin, glycerol was quickly identified for its role in skin hydration, similar to natural moisturizing factors (NMF).
Oct 08, 2013 | 11:43 AM CDT
By: Giorgio Dell'Acqua, PhD
While plant stem cells initially were marketed for their technological potential, they recently have been identified as an alternative, sustainable mean to produce nature-derived extracts and molecules.
Sep 13, 2013 | 02:05 PM CDT
By: D.R. Munden, Quest International Ltd.
It is well-known that perfumes can affect the viscosity of bubble bath or shampoo formulations. Usually they have a thinning effect, but they can also cause a viscosity increase. The effect and its magnitude will vary with perfume type and also with the product formulation. Small changes in the latter can cause large changes in a perfume's effect on the viscosity.
Sep 03, 2013 | 02:26 PM CDT
By: Howard I. Maibach, MD; and Michal W.S. Ong
In recent years, new agents, especially from plants, have been discovered and extracted to test for their depigmenting effects in vitro and in vivo. This article reviews these most recent skin whitening agents of interest, whose efficacy, mechanism and safety have been tested.