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New in Function (page 141 of 157)
Dec 23, 2005 | 06:04 PM CST
Makeup Powders Preservation and Water Activity
By: Valerie Vignier, Anne-Marie Mounier and Veroni…
Spores of Bacillus subtilis and selected molds were used to demonstrate the impact of different thermodynamic water activities on the behavior of microorganisms inoculated in makeup powders with or without preservatives.
Dec 23, 2005 | 05:51 PM CST
A New Dimension in Hairstyling–VP/Methacrylamide/Vinyl Imidazole Copolymer
By: C. Wood, S. Nguyen-Kim and P. Hoessel,l BASF A…
Data on friction, hardness, tack and other mechanical properties obtained from a nanoindenter on an atomic force microscope combined with conventional stress strain measurements demonstrate the potential of VP/methacrylamide/vinylimadazole copolymer , a new hairstyling polymer.
Dec 23, 2005 | 05:50 PM CST
Performance and Sensorial Benefits of Cationic Guar in Hair Care Applications
By: Stephanie Chiron
Cationic guars have demonstrated ability to manage the surface of the hair. This article discusses their physico-chemical properties, their hair conditioning and repairing properties, and their impact on foam sensorial aspects.
Dec 23, 2005 | 05:46 PM CST
A Brief Review of Polymer/Surfactant Interaction
By: Robert Y. Lochhead and Lisa R. Huisinga, The I…
In this article, the significance of parameters such as correlation length (blob size), micelle structure, comicellization, polymer adsorption conformation and coacervate structure are introduced with relevance to the conceptual appreciation of polymer-surfactant interactions and its bearing on recent advances in conditioning shampoos.
Dec 23, 2005 | 05:40 PM CST
Using Zinc Oxide in Sunscreen Products
By: Ken Klein
While zinc oxide had been used for decades in sunscreen products — remember the white coating on lifeguards’ noses? — it was only approved for this use by the FDA approximately 10 years ago. Prior to that, it was actually considered to be (and still is) an approved skin protectant material.
Dec 23, 2005 | 05:35 PM CST
Applications of Essential Fatty Acids in Skin Care, Cosmetics and Cosmeceuticals
By: Janice Brenner, BSP, MSc, MH, WT Bioriginal Fo…
Skin benefits of essential fatty acids include enhancement of cell membrane structure and function, barrier maintenance and recovery, anti-irritant and anti-inflammatory effects and penetration enhancement. Their metabolism is described and their use in cosmetics and cosmeceuticals is surveyed.
Dec 23, 2005 | 05:33 PM CST
Using Iontophoresis to Enhance Cosmetics Delivery
By: Dov Tamarkin, PhD, Power Paper Ltd.
This article describes the iontophoresis technique and discusses possible applications of iontophoresis in cosmetics. It also describes recent advances making this technique accessible for consumers at home.
Dec 23, 2005 | 05:31 PM CST
Evaluating Antipruritics
By: Hongbo Zhai, MD, and Howard I. Maibach, MD, Un…
Pruritus or itching is an unpleasant sensation that provokes a desire to scratch. Many factors such as chemical, mechanical, thermal and electrical stimuli can elicit the itch sensation. Mediators of itch presumably directly act on nerve fibers or lead to a nerve stimulation cascade whose final common pathway is interpreted in the central nervous system as itching. Putative receptors for itching are C-fibers with exceptionally low conduction velocities and insensitivity to mechanical stimuli. Histamine, the proto-typical chemical mediator of itch, which is released during mast cell degranulation and mediates its effects in the skin via H1 receptor, is the best-known experimental pruritogen.
Dec 23, 2005 | 05:22 PM CST
Rhizobium Gum: A Novel Cosmetic Ingredient from Soil to the Skin
By: Anthony Bresin, Ghislain Sanhaji and Romain Re…
A new polysaccharide, produced by fermentation of a Rhizobium sp. strain, is introduced as a typical example of how technology can create new properties and new applications from a “basic” natural ingredient.
Dec 23, 2005 | 05:20 PM CST
Anionic Organosilicones: Complexing Agents for Quaternary Compounds
By: Brian Vondruska, Laurie Marshall, Pamela McCal…
A new formulating technique allows for the preparation of clear gels containing both anionic rheology control polymers and cationic conditioning agents, ingredients which were traditionally thought to be incompatible with one another.