Recent in Methods & Processes (page 7 of 14)
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.
May 2, 2011 | Bob Bornfriend, Alberto Culver
This article aims to help novice formulators understand issues that arise from the scale-up of their recipes, and to remind experienced formulators of some of the less common pitfalls. It also focuses on the unique demands of process development for global implementation at multiple sites, specifically pertaining to the scale-up tasks for process engineers at multinational companies.
May 2, 2011 | Kim S. Finnie, PhD; and Chris Barbé, PhD, Ceramisphere Pty., Ltd.
In this article, retinol encapsulated in organosilica microparticles (12–14% w/w) having an average particle size of 0.3 micron are shown in a 40-day test period to exhibit enhanced stability to oxidation when compared with similar commercial stabilized retinol products.
May 2, 2011
Plant Advanced Technologies has developed a process to "milk" plants in order to obtain active and natural extracts without damaging the plants.
Apr 26, 2011 | Anthony J. O'Lenick Jr., Siltech LLC
This edition of "Comparatively Speaking" by industry expert Tony O'Lenick compares a product's density with its specific gravity, which are important measurements for formulators to understand especially when considering product specifications.
Mar 23, 2011
Researchers at Ohio State University have invented a single lens that enables microscopic objects to be viewed from nine angles at once to create a 3-D image.
Dec 29, 2010
Ecover Belgium NV has introduced an ecological, all-purpose cleaner suitable for cleaning the appliances and machinery used to manufacture food and cosmetics.
Dec 21, 2010
Syntopix Group Plc has secured backing from Intelligent Formulation Ltd. for a 30-day international research challenge. Over the month-long project, Syntopix will work with world experts to characterize microemulsions made from environmentally friendly surfactants, especially those used to make skin care.
Dec 20, 2010 | Anthony O'Lenick, Jr., Siltech LLC
Tony O'Lenick explains the difference between the refractive index and refraction of light to produce color. These terms can be used by the formulator to produce transparent emulsions and predict the color of emulsions, respectively.
Dec 13, 2010 | Anthony J. O'Lenick Jr., Siltech LLC
Tony O'Lenick explains the difference between two types of chromatography: gas liquid chromatography (GLC) and gel permeation chromatography (GPC), both used to separate compounds in mixtures.
Dec 1, 2010 | Anthony J. O'Lenick Jr., Siltech LLC
Formulators often are faced with product specifications for which the tests are not chemical but physical. Oftentimes, the terms describing these physical traits are not clearly defined. Two such terms are density and specific gravity.
Nov 3, 2010 | Rachel Grabenhofer
"How do you feel about peer review in scientific journals?" Rachel Grabenhofer, editor of Cosmetics & Toiletries magazine, recently asked. Here's how readers responded.