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New in Function (page 156 of 170)
Dec 23, 2005 | 03:27 PM CST
By: Uli Osterwalder and Bernd Herzog, Ciba Special…
Design considerations for broad-spectrum UV filters include photostability, solubility, efficacy, safety, registration, patent freedom, and PPD performance. These criteria are described and then applied in the case of bis-Ethylhexyloxyphenol methoxyphenyltriazine (BEMT), a new broadspectrum sunscreen active.
Dec 23, 2005 | 03:25 PM CST
By: Christine Saecker, DSM Nutritional Products
Most oral care products address plaque, caries, gingivitis, etc., with wellapproved active ingredients, however, consumers are increasingly looking for a more natural and complete approach to oral care. In this study, the catechin fraction of green tea – specifically epigallocatechin gallate (EGCG), exhibited several activities in oral care while offering a natural alternative.
Dec 23, 2005 | 03:23 PM CST
By: Johann W. Wiechers, PhD, Uniqema
Skin toning is defined and various mechanisms of action are discussed, including examples of molecules working via this mechanism. Specific attention is given to a possible new mechanism of action, namely that of reversed tanning.
Dec 23, 2005 | 03:18 PM CST
By: Larry Plonsker, Chemical Network Associates
Dendrimers are unique macromolecules that were invented in the late 1970s. They are three-dimensional, highly branched, star-like or tree-like polymers. They have three main components: a center core; a dendritic or branched interior; and exterior end groups. The uniqueness of this class of polymers is that they are well defined and are monodisperse, that is, the components of the polymer all have the same molecular weight. Most polymers are polydisperse in that there is a varying mixture of chain lengths in the final polymer.
Dec 23, 2005 | 03:16 PM CST
By: Peter Landa, Fiona Lam, Irina Morosov, Rita Ro…
In a series of evaluations comparing two skin moisturizers, hydroxyethyl urea was found to deliver moisturization efficacy comparable to glycerin, while offering some advantages in terms of sensory perception in skin care products.
Dec 23, 2005 | 03:09 PM CST
By: Y. Katsuta, T. Lida and S. Inomata, Life Scien…
In this study of pore size and sebum composition, the authors report that topical application of polyoxyethylene/polyoxypropylene dimethyl ether improves skin texture and reduces parakeratosis in facial skin, making large pores less visible.
Dec 23, 2005 | 03:06 PM CST
By: Cornelia Huber, Marie-Sophie Meyer and Thomas …
To combat orange peel skin, active ingredients can intervene directly in lipolysis, lipogenesis and fat accumulation in adipocytes. This article discusses two of those ingredients and a variety of test methods to demonstrate their efficacy.
Dec 23, 2005 | 02:59 PM CST
By: Ken Klein
There is probably no personal care category that is more competitive than shampoos. With this in mind, formulators of shampoos are asked by marketing to develop products to both appeal to consumers and perform (whatever “perform” means).
Dec 23, 2005 | 02:50 PM CST
By: Joanna Newton, Stephanie Postiaux, Catharine S…
Novel silicone-based vesicles can encapsulate and subsequently release a variety of cosmetic actives--both oil-soluble and water-soluble. This article discusses the silicone polyethers used to develop these vesicles and the methods used to evaluate both the silicone polyethers and the vesicles. One study describes the use of these vesicles to encapsulate retinyl palmitate.
Dec 23, 2005 | 02:38 PM CST
By: Roger E. Stier, Ph.D., Noville, Inc.
The combined knowledge of rheology and chemistry of binders together with the art of proper formulation leads to the production of aesthetically pleasing dentifrice formulations.