Analysis of human hair fibers by high fidelity, three-dimensional digital volumetric microanalysis : demonstration of cationic oligosaccharide deposition / James V. Gruber in IFSCC MAGAZINE, Vol. 5, N° 4 (10-11-12/2002)

[article]  inIFSCC MAGAZINE > Vol. 5, N° 4 (10-11-12/2002) . - p. 291-294 Titre : Analysis of human hair fibers by high fidelity, three-dimensional digital volumetric microanalysis : demonstration of cationic oligosaccharide deposition Type de document : texte imprimé Auteurs : James V. Gruber, Auteur ; A. Rivera, Auteur ; S. Wilford, Auteur ; D. Ciccognani, Auteur ; R. Shalvoy, Auteur ; R. Kerschman, Auteur Année de publication : 2002 Article en page(s) : p. 291-294 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cheveux -- Soins et hygiène Fluorescence Imagerie tridimensionnelle Oligosaccharides shampooings Index. décimale : 668.5 Parfums et cosmétiques Résumé : Methods for examining cationic polymer deposition on hair are well known and polymers such as Polyquaternium-10 have enjoyed a significant commercial impact on shampoos and body washes as unique conditioning materials. Recently, we began examining the influence of a new lipophilically-modified, cationic material based on glucose oligosaccharides derived from sugar cane. Using a new method of microscopic three-dimensional digital volumetric imaging in combination with fluorescent dye binding, we have examined the deposition of the cationic oligosaccharides onto damaged blond hair fibers. The new microscope analysis technique allows us to examine the areas on the hair fiber where the cationic oligosaccharides tend to gather after application from an anionic shampoo indicating that the oligosaccharides appear to migrate towards the cuticle edges and the cortex in damaged hair. In addition, because of the cuticle’s auto-fluorescence, we have found that the cortex and medulla of the hair appear to be opaque to the microscope’s visualizing system and we are able to manipulate the digital microscopic images to either a.) Eliminate the cortex of the hair fiber, or b.) Eliminate the cuticle of the hair fiber. We believe that this technique will allow a unique opportunity to examine the potential for penetration of fluorescent components (e.g., hair dyes) into the interior of the hair fiber as well as allowing us to examine the presence of the individual melanin particles that are entrained within the hair cortex. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10631 [article]

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