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New in Function (page 155 of 171)
Dec 23, 2005 | 05:35 PM CST
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
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
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
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
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.
Dec 23, 2005 | 05:18 PM CST
By: Jaimi Meyer, Steve Brown, Robert Kleiman, John…
The authors develop data on 10 attributes of 16 naturally derived PEGs and suggest a presentation technique by which the formulator may view two measured attributes simultaneously.
Dec 23, 2005 | 05:16 PM CST
By: Tharwat Tadros, Consultant; Karl Booten and Ba…
After a short introduction illustrating the basic principles for steric stabilization by polymeric surfactants, the authors describe a novel polymeric surfactant that consists of hydrophobically modified inulin and demonstrate that it is an effective stabilizer for O/W emulsions, suspensions, nano-emulsions and multiple emulsions.
Dec 23, 2005 | 04:56 PM CST
By: Christine Jeanmaire, Vincent Bardey, Louis Dan…
A new active ingredient obtained from germinated seeds improves the natural skin defense by boosting HSP expression in the keratinocytes in response to stress exposure.
Dec 23, 2005 | 04:50 PM CST
By: Tim Morris and Michael Hansberry, Cognis Corp.…
Esters derived from vegetable sources are becoming increasingly important as a class of active ingredients that deliver effective care benefits when properly formulated into hair cleansing products.
Dec 23, 2005 | 04:47 PM CST
By: Joanna Newton and Catherine Stoller, Dow Corni…
In physical association with active ingredients, silicones can act as delivery vehicles for actives in skin and hair; they can also provide improved sensory and aesthetic benefits, enhanced SPF and prolonged fragrance intensity.