Recent in Methods & Processes (page 6 of 9)
May 11, 2012
In a study from the University of Warwick, researchers from the UK and Australia describe a new method to synthesize polymers offering unprecedented control over the final polymer structure.
May 8, 2012 | Anthony J. O'Lenick Jr., Siltech LLC
Herein, industry expert Tony O'Lenick explains the difference between maceration and decoction, and how decoction can extract large quantities of inert materials that may contribute to microbiological spoilage.
May 3, 2012 | Ali Alikhan, MD, and Howard I. Maibach, MD
Following are some aspects of patch testing that require consideration, including the ingredients used, related legislative measures and testing limitations.
Apr 25, 2012
Researchers at Carnegie Mellon University have discovered how immune cells exchange information using a new fluorescent biosensor developed at the university.
Jan 13, 2012
A survey conducted by the Industrial Research Institute (IRI) has found that R&D spending is expected to increase in 2012. The company's 2012 R&D Trends Forecast also found that new product development will increase in 2012.
Jan 6, 2012 | Katie Anderson (Schaefer), Cosmetics & Toiletries magazine
Previously, the theory explaining emulsion behavior was based on the equilibrium contact angle of the particle at the interface; however, Vinothan N. Manoharan, PhD, and his team at Harvard believe the time allowed for the system to reach equilibrium and the force pushing the particle to the interface are equally as important.
Dec 13, 2011
Researchers at Harvard's School of Engineering and Applied Sciences (SEAS) have discovered that stabilized emulsions may take months to years to reach equilibrium. This research has important implications for the manufacturing processes used in pharmaceuticals, cosmetics and foods, among other chemical industries.
Nov 2, 2011 | Anthony J. O'Lenick Jr., Siltech LLC
In this "Comparatively Speaking," Tony O'Lenick explains the difference between patents and trade secrets, both of which cosmetic chemists will encounter during their careers. This information will assist in determining whether a technology should be patented or maintained as a trade secret.
Oct 28, 2011 | Gerd Dahms, ICI Specialty Chemicals Group, Atlas Chemie
In cosmetic and pharmaceutical creams and lotions, fatty alcohols are well-known as viscosity modifiers. In addition, Schulmann and Cockbain found that the stability of oil-in-water emulsions was greatly increased by addition of cetyl alcohol.
Aug 1, 2011 | Nava Dayan, PhD, and Albert Babik, Lipo Chemicals Inc.; Tim Higgs; and Howard R. Lasker, PhD, University at Buffalo
This paper reviews the knowledge and nature of the harvest practices for the octocoral Pseudopterogorgia elisabethae. P. elisabethae extract has been used for nearly two decades in cosmetics and preparations for skin benefits, and a review of the harvest provides product developers with an interesting case study of the harvest of a marine resource.
Aug 1, 2011 | Peter Tsolis and L. Grotzinger
Led by column editor Peter Tsolis of The Estée Lauder Companies, this recently added column in the Cosmetics & Toiletries magazine lineup covers some of the more common formulation challenges and suggests solutions for novice formulators as well as seasoned experts.
Jul 19, 2011 | Th. Förster, B. Jackwerth, W. Pittermann, W. von Rybinski and M. Schmitt, Henkel KGaA
This work studied the influence of emulsion type and structure on the penetration of vitamins as cosmetic active ingredients. An emulsion of the w/o type and two different o/w emulsions were compared with an oil solution as a standard. A systematic in vitro study of penetration into the stratum corneum and the living skin was performed with the isolated perfused bovide udder skin model. The results substantiate the influence of emulsion type and stucture on the degree of penetration of water-soluble and oil-soluble vitamins into the skin.