Recent in Formulating Aids (page 8 of 9)
Apr 24, 2006 | Yun Shao, PhD, David Schlossman and Eric Smith, Kobo Products Inc.
Several types of PEG/PPG dimethicones and acrylate silicone copolymers were selected, and significant differences in their ability to disperse and stabilize pigments were studied. As the particle size got smaller, the color became deeper and stronger.
Apr 21, 2006 | Arndt Schlosser and Bryan Fry, Wacker Silicones, Wacker Chemical Corp.
Silicone resins trimethylsiloxysilicate and Polymethylsilsesquioxane provide transfer resistance to cosmetic formulations. Phenylcontaining silicone resins additionally provide a high refractive index and gloss. A gelbased silicone resincontaining powder adds improved skin feel and oil absorption.
Apr 19, 2006 | James M. Wilmott, Barbara E. Brockway, PhD, Duncan Aust, PhD, and James A. Hayward, The Collaborative Group
The author describes how familiar hydrophobic materials can be formed into stable aqueous dispersions via an extraordinary high pressure, high shear process utilizing blends of alkylated phophatidyl choline.
Apr 5, 2006
Honeywell announced the launch of its line of ingredients designed to improve the features and performance of cosmetics and personal care products.
Jan 11, 2006 | Anthony J. O'Lenick, Jr., Siltech LLC; Thomas G. O’Lenick, Georgia Southern University
Tapping into little understood products selected from a class of well known compounds can provide formulation advantages. PEG/PPG dimethicone compounds, alkyl dimethicone compounds and alkyl PEG/PPG dimethicone compounds are three classes of compounds that offer far more utility in personal care products than is generally appreciated by formulators.
Jan 2, 2006 | James Ziming Sun, PhD, and James W. Parr, Schwarzkopf and Henkel
This article focuses on the physical principles of nonaqueous emulsions and their practical applications in preventing discoloration from ascorbic acid, hydroquinone and dihydroxyacetone.
Dec 23, 2005 | Tharwat Tadros, Wokingham; Lorna Kessell, Uniqema
Nanodispersions can be stabilized by various techniques to prevent flocculation, Ostwald ripening and coalescence in solubilized systems, liposomes, microemulsions, nanoemulsions and nanosuspensions. Examples are described.
Dec 13, 2005 | John A. Imperante, Phoenix Chemical
Hydrolytic instability of esters in cosmetic products can be reduced, compared to that of standard straight chain esters, by using non-hydrolyzable esters synthesized from a diol reaction sequence. Two commercial dimer diol di-esters, given as examples, enable stable formulations at extremes of pH.
Dec 13, 2005 | Barbara E Brockway, PhD, Optima Chemicals Ltd.
Sugar can be useful to formulate preservative-free products and to maintain the stability of formulations during freeze-thaw cycles. Formulators are beginning to recognize sugar as an active ingredient whose derivatives offer new uses in the personal care industry.
Nov 1, 2005 | Albert Shansky, PhD, Albert Shansky Consultants Inc.
Antichaotropic salts stabilize cysteine by lowering the water activity in an aqueous solution. This technique can be used to extend the shelf life of cysteine permanent wave solutions.
Sep 30, 2005 | Giovanni Pantini, Solvay Solexis SpA
Clinical studies described here show that perfluoropolyether phosphate behaves as a very mild acidic agent, being effective in decreasing the pH without increasing the collateral effects of acidic compositions.
May 6, 2003 | Dennis Laba, Elementis Specialties
This article explains how to select a thickener from nine basic thickener groups that enable the chemist to change a product's viscosity and rheological properties, such as stability, feel and flow.